Roland Recording Equipment UA 25 EX User Guide

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USING THE UNIT SAFELY  
About WARNING and CAUTION Notices  
About the Symbols  
The symbol alerts the user to important instructions or  
Used for instructions intended to alert the  
user to the risk of death or severe injury  
should the unit be used improperly.  
warnings.The specific meaning of the symbol is  
determined by the design contained within the triangle. In  
the case of the symbol at left, it is used for general  
cautions, warnings, or alerts to danger.  
Used for instructions intended to alert the  
user to the risk of injury or material  
damage should the unit be used  
improperly.  
The symbol alerts the user to items that must never be  
carried out (are forbidden). The specific thing that must  
not be done is indicated by the design contained within  
the circle. In the case of the symbol at left, it means that  
the unit must never be disassembled.  
* Material damage refers to damage or  
other adverse effects caused with  
respect to the home and all its  
furnishings, as well to domestic animals  
or pets.  
The symbol alerts the user to things that must be  
carried out. The specific thing that must be done is  
indicated by the design contained within the circle. In the  
case of the symbol at left, it means that the power-cord  
plug must be unplugged from the outlet.  
ALWAYS OBSERVE THE FOLLOWING  
Do not open or perform any internal  
modifications on the unit.  
Never install the unit in any of the  
following locations.  
Subject to temperature extremes  
(e.g., direct sunlight in an enclosed  
vehicle, near a heating duct, on top  
of heat-generating equipment); or  
are  
.......................................................................................................................  
Do not attempt to repair the unit, or  
replace parts within it (except when  
this manual provides specific instruc-  
tions directing you to do so). Refer all  
servicing to your retailer, the nearest  
Roland Service Center, or an autho-  
rized Roland distributor, as listed on  
the “Information” page.  
Damp (e.g., baths, washrooms, on  
wet floors); or are  
Exposed to steam or smoke; or are  
Subject to salt exposure; or are  
Humid; or are  
.......................................................................................................................  
Exposed to rain; or are  
This unit, either alone or in combi-  
nation with an amplifier and  
Dusty or sandy; or are  
Subject to high levels of vibration  
and shakiness.  
headphones or speakers, may be  
capable of producing sound levels  
that could cause permanent hearing  
loss. Do not operate for a long period  
of time at a high volume level, or at a  
level that is uncomfortable. If you  
experience any hearing loss or  
.......................................................................................................................  
Make sure you always have the unit  
placed so it is level and sure to remain  
stable. Never place it on stands that  
could wobble, or on inclined surfaces.  
ringing in the ears, you should  
.......................................................................................................................  
immediately stop using the unit, and  
consult an audiologist.  
.......................................................................................................................  
3
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USING THE UNIT SAFELY  
Do not allow any objects (e.g.,  
flammable material, coins, pins); or  
liquids of any kind (water, soft drinks,  
etc.) to penetrate the unit.  
Try to prevent cords and cables from  
becoming entangled. Also, all cords  
and cables should be placed so they  
are out of the reach of children.  
.......................................................................................................................  
Never climb on top of, nor place  
heavy objects on the unit.  
.......................................................................................................................  
Immediately turn the power off, and  
request servicing by your retailer, the  
nearest Roland Service Center, or an  
authorized Roland distributor, as  
listed on the “Information” page  
when:  
.......................................................................................................................  
Disconnect all cords coming from  
external devices before moving the  
unit.  
.......................................................................................................................  
If smoke or unusual odor occurs  
Always turn the phantom power off  
when connecting any device other  
than condenser microphones that  
require phantom power. You risk  
causing damage if you mistakenly  
supply phantom power to dynamic  
microphones, audio playback  
devices, or other devices that don’t  
require such power. Be sure to check  
the specifications of any micro-  
phone you intend to use by referring  
to the manual that came with it.  
Objects have fallen into, or liquid  
has been spilled onto the unit; or  
The unit has been exposed to rain  
(or otherwise has become wet); or  
The unit does not appear to  
operate normally or exhibits a  
marked change in performance.  
.......................................................................................................................  
In households with small children, an  
adult should provide supervision  
until the child is capable of following  
all the rules essential for the safe  
operation of the unit.  
.......................................................................................................................  
(This instrument’s phanto power:  
DC 48V, 8mA Max)  
.......................................................................................................................  
Protect the unit from strong impact.  
(Do not drop it!)  
.......................................................................................................................  
DO NOT play a CD-ROM disc on a  
conventional audio CD player. The  
resulting sound may be of a level that  
could cause permanent hearing loss.  
Damage to speakers or other system  
components may result.  
.......................................................................................................................  
4
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IMPORTANT NOTES  
Power Supply  
Maintenance  
Before connecting this unit to other devices, turn  
off the power to all units. This will help prevent  
malfunctions and/or damage to speakers or  
other devices.  
For everyday cleaning wipe the unit with a soft,  
dry cloth or one that has been slightly dampened  
with water. To remove stubborn dirt, use a cloth  
impregnated with a mild, non-abrasive  
detergent. Afterwards, be sure to wipe the unit  
thoroughly with a soft, dry cloth.  
Placement  
Never use benzine, thinners, alcohol or solvents  
of any kind, to avoid the possibility of discolor-  
ation and/or deformation.  
Using the unit near power amplifiers (or other  
equipment containing large power transformers)  
may induce hum. To alleviate the problem,  
change the orientation of this unit; or move it  
farther away from the source of interference.  
Handling CD-ROMs  
This device may interfere with radio and  
television reception. Do not use this device in the  
vicinity of such receivers.  
Avoid touching or scratching the shiny underside  
(encoded surface) of the disc. Damaged or dirty  
CD-ROM discs may not be read properly. Keep  
your discs clean using a commercially available  
CD cleaner.  
Noise may be produced if wireless communica-  
tions devices, such as cell phones, are operated in  
the vicinity of this unit. Such noise could occur  
when receiving or initiating a call, or while  
conversing. Should you experience such  
problems, you should relocate such wireless  
devices so they are at a greater distance from this  
unit, or switch them off.  
Copyright  
Recording, duplication, distribution, sale, lease,  
performance, or broadcast of copyrighted  
material (musical works, visual works, broad-  
casts, live performances, etc.) belonging to a  
third party in part or in whole without the  
permission of the copyright owner is forbidden  
by law.  
When moved from one location to another  
where the temperature and/or humidity is very  
different, water droplets (condensation) may  
form inside the unit. Damage or malfunction may  
result if you attempt to use the unit in this  
condition. Therefore, before using the unit, you  
must allow it to stand for several hours, until the  
condensation has completely evaporated.  
This product can be used to record or duplicate  
audio or visual material without being limited by  
certain technological copy-protection measures.  
This is due to the fact that this product is  
intended to be used for the purpose of  
producing original music or video material, and is  
therefore designed so that material that does not  
infringe copyrights belonging to others (for  
example, your own original works) can be  
recorded or duplicated freely.  
Depending on the material and temperature of  
the surface on which you place the unit, its  
rubber feet may discolor or mar the surface.  
You can place a piece of felt or cloth under the  
rubber feet to prevent this from happening. If  
you do so, please make sure that the unit will not  
slip or move accidentally.  
Do not use this unit for purposes that could  
infringe on a copyright held by a third party. We  
assume no responsibility whatsoever with regard  
to any infringements of third-party copyrights  
arising through your use of this unit.  
5
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IMPORTANT NOTES  
Additional Precautions  
*
*
*
*
*
Microsoft, Windows and Windows Vista are  
registered trademarks of Microsoft Corporation.  
Use a reasonable amount of care when using the  
unit’s buttons, sliders, or other controls; and  
when using its jacks and connectors. Rough  
handling can lead to malfunctions.  
Windows® is known officially as: “Microsoft®  
Windows® operating system.”  
Apple, Macintosh and Mac OS are registered  
trademarks of Apple Inc.  
When connecting / disconnecting all cables,  
grasp the connector itself—never pull on the  
cable. This way you will avoid causing shorts, or  
damage to the cable’s internal elements.  
Cakewalk is a registered trademark of Cakewalk,  
Inc.  
MMP (Moore Microprocessor Portfolio) refers to a  
patent portfolio concerned with microprocessor  
architecture, which was developed by  
Technology Properties Limited (TPL).  
Roland has licensed this technology from the TPL  
Group.  
To avoid disturbing your neighbors, try to keep  
the unit’s volume at reasonable levels. You may  
prefer to use headphones, so you do not need to  
be concerned about those around you (especially  
when it is late at night).  
When you need to transport the unit, package it  
in the box (including padding) that it came in, if  
possible. Otherwise, you will need to use equiv-  
alent packaging materials.  
*
*
MPEG Layer-3 audio compression technology is  
licensed from Fraunhofer IIS Corporation and  
THOMSON Multimedia Corporation.  
All product names mentioned in this document  
are trademarks or registered trademarks of their  
respective owners.  
Some connection cables contain resistors. Do not  
use cables that incorporate resistors for  
connecting to this unit. The use of such cables  
can cause the sound level to be extremely low, or  
impossible to hear. For information on cable  
specifications, contact the manufacturer of the  
cable.  
6
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Contents  
Connecting a microphone and applying the compressor..................................................34  
Driver settings.....................................................................................................................................38  
Removing the driver .........................................................................................................................40  
Power management settings ........................................................................................................42  
System “Performance” settings (Windows)..............................................................................43  
System volume settings ..................................................................................................................44  
About standard driver mode .........................................................................................................45  
Troubleshooting ...........................................................................................46  
Problems when installing the driver...........................................................................................46  
Problems with settings ....................................................................................................................49  
Problems with playback or recording ........................................................................................50  
Specifications................................................................................................55  
Index ..............................................................................................................57  
7
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Contents of the Package  
After you open the package, please check that all items are present.  
If anything is missing, contact your dealer.  
UA-25EX  
fig.ua-25ex.eps  
Owner’s manual  
This is the document you’re reading. Keep it at hand for reference when needed.  
CD-ROMs (2 discs)  
*
Before you open the included CD-ROM, you must read the “license agreement.” Opening the CD-  
ROM will be taken to mean your acceptance of the license agreement.  
UA-25EX Driver CD-ROM  
This contains the UA-25EX drivers and demo songs.  
Cakewalk Production Plus Pack CD-ROM  
This package includes:  
DAW software that lets you experience a premium music production environment  
A sampling synthesizer that’s ready for immediate use  
For details on using these software, refer to the installation guides and the software help  
provided on the CD-ROM.  
*
*
Use of the demo song supplied with this product for any purpose other than private, personal  
enjoyment without the permission of the copyright holder is prohibited by law. Additionally, this  
data must not be copied, nor used in a secondary copyrighted work without the permission of  
the copyright holder.  
Avoid touching or scratching the shiny underside (encoded surface) of the disc. Damaged or  
dirty CD-ROM discs may not be read properly. Keep your discs clean using a commercially  
available CD cleaner.  
DO NOT play a CD-ROM disc on a conventional audio CD player. The resulting  
sound may be of a level that could cause permanent hearing loss. Damage to  
speakers or other system components may result.  
8
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Contents of the Package  
USB cable  
Use this cable to connect the UA-25EX to the USB connector of your computer.  
*
Please use only the included USB cable. If you require a replacement due to loss or damage,  
please contact the nearest Roland Service Center, or an authorized Roland distributor, as listed  
on the “Information” page.  
License agreement  
This agreement allows you to use certain software whose copyright is the property of Roland  
Corporation. You must read this before opening the CD-ROMs.  
You’ll need to provide the following items  
External amplifier, speakers, headphones, and microphone are not included.  
The external amplifier, speakers, or headphones that you’ll need in order to listen to sounds  
that are output via the UA-25EX are not included. Nor is there included a microphone for  
connection to the UA-25EX to input audio. You’ll need to obtain these items separately.  
Cables for connecting to an MD or DAT recorder are not included.  
You can use an MD or DAT digital recorder to record digital audio, but a cable for connecting  
your digital device to the UA-25EX is not included. You’ll need to obtain this separately.  
9
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Panel Descriptions  
You must install the driver before you connect the UA-25EX to your computer for the first time.  
Install the driver as described in “Driver Installation and Settings” (p. 15).  
Front panel  
fig. front.eps  
1
2
3
4 5 8 9  
12  
13  
6 7 10 11  
1. Combo input jacks  
These are analog audio input jacks with microphone  
preamps. They accommodate both XLR type and phone type  
plugs, allowing you to use the type appropriate for the  
device you’re connecting. They also support either balanced  
or unbalanced connections.  
XLR type plug  
Connect a microphone to XLR type jacks. The XLR type jacks  
can provide 48 V phantom power, allowing you to connect a  
phantom-powered condenser microphone. In this case, set  
the rear panel Phantom power switch (23) to the ON  
position.  
TRS phone  
type plug  
(balanced)  
Phone type plug  
(unblanced)  
*
This instrument is equipped with  
GND (SLEEVE)  
COLD (RING)  
balanced (XLR/TRS) type jacks. Wiring  
diagrams for these jacks are shown on  
the right. Make connections after first  
checking the wiring diagrams of other  
equipment you intend to connect.  
1: GND  
2: HOT  
3: COLD  
HOT (TIP)  
2. Input sensitivity knobs  
These adjust the input level of the signals that are input from the front panel combo input jacks (1)  
.
3. Input impedance select switch  
This lets you select either high impedance (Hi-Z) or low impedance (Lo-Z) as appropriate for the  
device you’ve connected to the phone type input jack of combo input jack (1) INPUT 2/R.  
If you’ve connected a guitar or bass, turn the input impedance select switch on (pressed inward  
)
to select high impedance (Hi-Z). If you’ve connected a synthesizer or an analog audio device, turn the  
input impedance select switch off (outward position ) to select low impedance (Lo-Z).  
The phone type jack of the combo input jack INPUT 1/L is fixed at low impedance (Lo-Z).  
10  
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Panel Descriptions  
fig. front.eps  
1
2
3
4 5 8 9  
12  
13  
6
7 10 11  
4. Compressor/Limiter threshold knob  
This adjusts the threshold of the compressor/limiter.  
Turning the knob toward the right will lower the level at which the compressor/limiter begins to be  
applied. If the rear panel compressor/limiter type switch (22) is set to compressor 1 (or 2), the  
gain (makeup gain) will rise as the threshold level is lowered, producing a fat sound.  
Turning this all the way to the left will turn off the compressor/limiter.  
*
Turning this knob toward the right will strengthen the compressor effect, which may create the  
impression that the tone is being affected. If this occurs, turn the threshold knob back toward  
the left until the tonal change is not noticeable.  
*
If you want to turn the circuit itself completely off, set the rear panel compressor/limiter type  
switch (22) to the OFF (BYPASS) position.  
5. Peak indicator  
This indicates the input signal level. Use the input sensitivity knob (2) for each input jack to adjust  
the input level so that the peak indicator does not light.  
If the rear panel compressor/limiter type switch (22) is set to OFF (BYPASS) position, the peak  
indicator will light red. The compressor/limiter type switch is set to compressor 1, 2 or Limiter  
position, the peak indicator will light green.  
6. Digital input switch  
If you want to record from the digital input, turn this ON (pressed inward ).  
This allows you to synchronize with the external digital device connected to the digital input  
connector (17).  
Digital input switch  
Status  
The input from the digital input connector (17) is sent to the  
computer (Digital input mode).  
ON with a digital device connected to  
the digital input connector  
The input from the combo input jacks (1) is sent to the computer.  
OFF  
The audio signal (sound) that is output from the computer via USB  
will pass through the UA-25EX and return to the computer  
(LoopBack mode).  
ON with no digital device connected  
to the digital input connector  
*
In digital input mode you will not hear the sound from the computer. The settings of the direct  
monitor section will be ignored. This means that the direct monitor switch (9), STEREO/MONO  
select switch (8), and direct monitor volume (10) will not do anything.  
11  
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Panel Descriptions  
7. USB indicator  
This will light blue if the UA-25EX is connected to your computer via the USB cable and the  
computer has correctly recognized the UA-25EX.  
8. STEREO/MONO select switch (direct monitor section)  
This selects whether the input signal from the combo input jacks (1) will be monitored in stereo  
(STEREO) or in monaural (MONO).  
If you’ve connected a guitar only to INPUT 2/R, set this to monaural ( pressed inward). Even if this  
is set to monaural, the audio signal sent via USB to your computer will be stereo.  
*
If the digital input switch (6) is on, operating the STEREO/MONO select switch will not do  
anything.  
9. Direct monitor switch (direct monitor section)  
This selects whether the input signal from the combo input jacks (1) will be output from the  
headphone jack (13) and master output jacks (14). The direct monitor ON and OFF will change  
whenever this switch is pushed. The direct monitor ON/OFF status can be controlled directly from  
ASIO 2.0 compatible software such as Cubase.  
Direct monitor switch  
Status  
ON  
The input signal will be output.  
(direct monitor indicator lit)  
The input signal will not be output.  
OFF  
Use the OFF setting if the audio signal is being passed “through” within  
the computer, or if you’ve connected a mixer and are monitoring the  
input signal directly from the mixer’s output.  
(direct monitor indicator unlit)  
*
In digital input mode (p. 11), direct monitor is always ON, regardless of the direct monitor  
switch operation.  
10. Direct monitor volume (direct monitor section) knob  
This adjusts the volume at which the input signal from the combo input jacks (1) is output from  
the headphone jack (13) and master output jacks (14).  
If this is turned all the way to the right, the monitored sound will be twice volume (+6 dB).  
11. Direct monitor indicator (direct monitor section)  
This will light when direct monitor is on, and will be unlit when it is OFF. If the digital input switch  
(6) is turned on, direct monitor will be OFF automatically and the direct monitor indicator will be  
extinguished.  
12. Output volume knob  
This adjusts the volume that is output from the headphone jack (13) and master output jacks  
(14).  
13. Headphone jack  
Accepts connection of headphones. This jack will output the same sound as the master output  
jacks (14). Sound will be output from the master output jacks even if headphones are connected.  
12  
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Panel Descriptions  
Rear panel  
fig.rear.eps  
22  
15  
19  
21 23  
16 17  
20  
14  
18  
14. Master output jacks (TRS balanced type, RCA phono type)  
These are output jacks for analog audio signals. The phone jacks and RCA phono jacks output the  
same signal. You may use whichever type of jack is appropriate for the connected device or the  
type of cable.  
*
The TRS balanced master output jacks are wired as  
shown on the right. Before you make connections, check  
the wiring of the equipment you’re connecting.  
GND (SLEEVE)  
HOT (TIP)  
COLD (RING)  
15. Ground lift switch  
Normally, you can leave this in the NORMAL (NOR) position. If you  
experience noise due to a ground loop, you may be able to  
eliminate the noise by setting this to the LIFT position, so that the  
sleeve (SLEEVE) pin of the master output TRS balanced jacks is  
disconnected from ground.  
Mater output jack  
(TRS balanced type)  
NOR  
LIFT  
16. Digital output connector (optical)  
This is an output connector for digital audio signals. Use this to digitally output audio signals to a  
digital audio device such as an MD or DAT. Use an optical cable to make connections.  
17. Digital input connector (optical)  
This is a input connector for digital audio signals. Use this to digitally input audio signals from a  
digital audio device such as a CD, MD, or DAT. Use an optical cable to make connections.  
18. MIDI IN/OUT connectors  
These are MIDI connectors which transmit and receive MIDI messages between computer.  
*
The MIDI IN/OUT connectors are not available, if you’re using the UA-25EX in Standard driver  
mode (p. 45).  
19. Sample rate select switch  
This specifies the sample rate at which audio is recorded or played back. If you change the setting  
of the sample rate select switch, you must close all software, disconnect the USB cable that  
connects the UA-25EX to your computer, and then reconnect the USB cable.  
*
If you are using Standard driver mode (the Advanced Driver switch turned off), the sample rate  
is fixed at 44.1 kHz regardless of the sample rate select switch setting.  
*
If you want to use 96 kHz, set the switch to “96R” while recording and to “96P” while playing  
back.  
13  
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Panel Descriptions  
20. USB connector  
Use a USB cable to connect this to your computer.  
21. Advanced driver switch  
This switches the operating mode between Advanced mode (ON) and Standard mode (OFF).  
Normally, you can leave this set to Advanced mode (ON).  
*
If you change this setting, you must disconnect the UA-25EX’s USB cable from your computer,  
and then re-connect it.  
Switch  
Explanation  
ON  
In this mode you can use the dedicated driver, which allows you to play and record  
audio with high quality and stable timing.  
(Advanced mode)  
In this mode you can use the standard audio driver provided by your operating  
system. This is convenient if you don’t have the dedicated driver, or if you’re unable  
to install the dedicated driver. However, the following limitations apply.  
OFF  
The UA-25EX will operate at 44.1 kHz/16-bit mode regardless of the setting of the  
sample rate select switch (19).  
ASIO drivers are not supported.  
(Standard driver mode)  
The MIDI IN/OUT connectors (18) cannot be used.  
22. Compressor/Limiter type switch  
This selects the type of hardware compressor/limiter that is applied to the input signal from the  
combo input jacks (1). Use the compressor/limiter threshold knob (4) to adjusts the threshold  
of the compressor/limiter.  
The UA-25EX provides two type of compressors, each type have different attack time.  
Switch  
Explanation  
Compressor 1  
(COMP 1)  
A compressor with a short attack time, suitable for vocals.  
Compressor 2  
(COMP 2)  
A compressor with a long attack, suitable for recording instruments such as percussion or  
acoustic guitar.  
This applies mild compression when an unexpected, high-volume signal is input,  
preventing clipping noise from occurring before the AD converter.  
* Clipping noise will occur if the input exceeds the range of the limiter.  
Limiter  
(LIMIT)  
OFF  
(BYPASS)  
The compressor/limiter circuit will be completely bypassed.  
23. Phantom power switch  
This is an ON/OFF switch for the phantom power that is supplied to the XLR connectors of the front  
panel combo input jacks (1).  
*
You must leave the phantom power turned off unless condenser microphones requiring  
phantom power are connected to the XLR connectors. Supplying phantom power to a dynamic  
microphone or to an audio playback device may cause malfunctions. For details on the  
requirements of your microphone, refer to its owner’s manual.  
*
The UA-25EX’s phantom power supply: DC 48 V, 8 mA maximum.  
14  
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Driver Installation and Settings  
The installation procedure and the settings will differ depending on your system. To perform the  
installation and make settings, follow the three steps listed below for your system.  
H_install_e.eps_95  
Windows  
Vista  
Mac OS X  
Windows XP  
Install the  
driver  
p. 16  
p. 20  
p. 24  
1.  
2.  
3.  
p. 25  
p. 26  
Input/output  
device settings  
p. 18  
p. 28  
p. 22  
p. 28  
Verifying that you  
hear sound  
p. 28  
What is a driver?  
A driver is software that transfers data between the UA-25EX and the application software on your  
computer when the UA-25EX is connected to your computer. The driver sends data from your  
application software to the UA-25EX, and routes data from the UA-25EX to your application  
software.  
If you want to use the UA-25EX in Standard driver mode, refer to “About standard driver mode”  
(p. 45).  
15  
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Driver Installation and Settings  
Windows Vista users  
Operation of the UA-25EX  
Steps to be performed on the UA-25EX itself are marked by a  
symbol.  
Do not connect the UA-25EX to your computer until you are directed to do so.  
Installing the driver  
1
Start up Windows without the UA-25EX connected.  
Disconnect all USB cables other than those for a USB keyboard and/or USB mouse (if used).  
*
2
3
Close all currently running software.  
Insert the included “UA-25EX Driver CD-ROM” into your CD-ROM drive.  
*
If the auto-play dialog appears, click “Open folder to see files.”  
4
On the CD-ROM, navigate to the Driver Vista folder, and double-click the Setup icon.  
*
If a message saying “Driver installation must be performed by an administrator” appears,  
log on to Windows as a user whose account has administrative privileges, and perform the  
installation again.  
5
A confirmation screen regarding user account control will appear.  
Click [Continue].  
fig.vista-5e.eps  
6
The screen will indicate “UA-25EX Driver will be installed on your computer.”  
Click [Next].  
*
If any other message appears, proceed as directed by the message.  
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Driver Installation and Settings  
7
To begin the installation, click [Next] once again.  
Installation will begin.  
If a dialog box related to Windows Security appears, click [Install].  
fig.vista-7e.eps  
The screen will indicate “Ready to install the driver.”  
*
If any other message appears, proceed as directed by the message.  
8
Operation of the UA-25EX  
Set the UA-25EX’s Advanced driver switch to the ON position.  
*
If the Advanced driver switch is set to OFF, the installation will not take place as described in the  
following procedure.  
fig.advancedon_e.eps  
9
Operation of the UA-25EX  
Use a USB cable to connect the UA-25EX to your computer.  
*
This unit is equipped with a protection circuit. A brief interval (a few seconds) after connecting  
the USB cable is required before the unit will operate normally.  
10  
11  
The message “Installing device driver software” will appear in the lower right corner of the  
screen, and the driver will be installed automatically.  
*
*
It may take some time (ten seconds or more) until the message appears.  
If any other message appears, note the content of the message and close it.  
When installation has been completed, the Driver Setup dialog box will indicate “Installation has  
been completed.”  
Click [Close] to close the Driver Setup dialog box.  
If the System Settings Change dialog box appears, click [Yes]. Windows will automatically restart.  
Next, you need to set your software so it can use the UA-25EX.  
17  
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Driver Installation and Settings  
Input/output device settings  
In order to use the UA-25EX with your software, you’ll need to select the UA-25EX as the audio  
and MIDI input/output device. For details on how to do this, refer to the documentation for your  
software.  
*
If you’re unable to select the UA-25EX as the audio input/output device in your software, it may  
be that a problem has occurred. Refer to “Problems with settings” (p. 49) in the  
Troubleshooting section.  
Audio input/output device  
MIDI OUT device  
Audio output device  
Audio input device  
OUT (UA-25EX)  
IN (UA-25EX)  
*
If you’re using ASIO compatible software, select the UA-25EX in the ASIO settings of your  
software.  
MIDI input/output device  
MIDI OUT device  
MIDI output device  
MIDI input device  
UA-25EX  
UA-25EX  
*
The Windows Media Player included with Windows Vista cannot use the UA-25EX’s MIDI input/  
output device.  
Settings when using the UA-25EX in Windows Media Player  
Some software such as Windows Media Player will use the system default playback/recording  
device for its audio input/output device.  
Here’s how to specify the UA-25EX as the system default playback device so that it can be used with  
Windows Media Player.  
*
In a later step, you’ll use Windows Media Player to play back sample data. Be sure to make the  
settings described below.  
1
Open the Control Panel, click the Hardware and Sound and click Sound.  
If you’re using the Classic view, double-click Sound.  
*
2
3
Open the Playback tab, select the UA-25EX’s OUT, and click [Set Default].  
Click [OK] to complete the setting.  
*
If you select the UA-25EX as the default playback device, audio alerts and other sounds from  
Windows will also be output from the UA-25EX, and therefore will not be heard from your  
computer’s speakers.  
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Caution when recording or playing back with your software  
Check the following points before you use the UA-25EX to record or play back.  
Connect the UA-25EX to your computer before you start up the software you’re using.  
Do not disconnect the UA-25EX’s USB cable from your computer while your software is  
running. Close the software you’re using before you disconnect the UA-25EX’s USB  
cable from your computer.  
This completes driver installation and settings.  
Next, verify that you hear sound from the UA-25EX. “Verifying that you hear sound” (p. 28).  
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Driver Installation and Settings  
Windows XP users  
Operation of the UA-25EX  
Steps to be performed on the UA-25EX itself are marked by a  
symbol.  
Do not connect the UA-25EX to your computer until you are directed to do so.  
Installing the driver  
1
Start up Windows without the UA-25EX connected.  
Disconnect all USB cables other than those for a USB keyboard and/or USB mouse (if used).  
*
2
3
4
Close all currently running software.  
Insert the included “UA-25EX Driver CD-ROM” into your CD-ROM drive.  
In the CD-ROM, navigate to the Driver XP folder, and double-click the Setup icon.  
*
If the “Install Program As Other User” dialog box appears, click [Cancel] to terminate the  
installation, log on to Windows using an administrator account, and perform the installation  
once again.  
5
6
The screen will indicate “UA-25EX Driver will be installed on your computer.” Click [Next].  
If any other message appears, proceed as directed by the message.  
*
To begin the installation, click [Next].  
If the Software Installation dialog box appears, click [Continue Anyway] to proceed with the  
installation.  
fig.XP-6e.eps  
*
If you are unable to proceed, click [OK] to halt the installation, and then change the settings as  
described in “Driver signing option settings (Windows XP)” (p. 39).  
The screen will indicate “Ready to install the driver.”  
*
If any other message appears, proceed as directed by the message.  
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Driver Installation and Settings  
7
8
Operation of the UA-25EX  
Set the UA-25EX’s Advanced driver switch to the ON position.  
*
*
If the Advanced driver switch is set to OFF, the installation won’t take place as described in the  
following procedure.  
Operation of the UA-25EX  
Use a USB cable to connect the UA-25EX to your computer.  
This unit is equipped with a protection circuit. A brief interval (a few seconds) after connecting  
the USB cable is required before the unit will operate normally.  
1. The message “Found New Hardware” will appear in the lower right corner of the screen, and the  
Found New Hardware Wizard will appear.  
*
It may take between ten seconds to several minutes until the Found New Hardware  
Wizard appears.  
If you are asked whether you want to connect to Windows Update, choose No and click [Next].  
fig.XP-8e.eps  
2. Choose Install the software automatically (Recommended), and click [Next].  
3. If the Hardware Installation dialog box appears, click [Continue Anyway] to proceed with the  
installation.  
*
If you are unable to proceed, click [OK] to halt the installation, and then change the settings  
as described in “Driver signing option settings (Windows XP)” (p. 39).  
4. The screen will indicate “Completing the Found New Hardware Wizard.”  
Click [Finish].  
9
When installation is complete, the Driver Setup dialog box will indicate “Installation has been  
completed.”  
Click [Close] to close the Driver Setup dialog box.  
If the System Settings Change dialog box appears, click [Yes] to restart Windows.  
Next, you need to set your software so it can use the UA-25EX.  
21  
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Driver Installation and Settings  
Input/output device settings  
In order to use the UA-25EX with your software, you must select the UA-25EX as the audio and MIDI  
input/output device. For details on how to make this setting, refer to the documentation for the  
software you’re using.  
*
If you’re unable to select the UA-25EX as the audio input/output device in your software, it may  
be that a problem has occurred. Refer to “Problems with settings” (p. 49) in the  
Troubleshooting section.  
Audio input/output device  
MIDI OUT device  
Audio output device  
Audio input device  
OUT (UA-25EX)  
IN (UA-25EX)  
*
If you’re using ASIO compatible software, select the UA-25EX in the ASIO settings of your  
software.  
MIDI input/output device  
MIDI OUT device  
MIDI output device  
MIDI input device  
UA-25EX  
UA-25EX  
Settings when using the UA-25EX in Windows Media Player  
Some software, such as Windows Media Player, may use the system default playback/recording  
device as its audio and MIDI input/output device.  
Here’s how to specify the UA-25EX as the system default playback device so that it can be used with  
Windows Media Player.  
*
In a later step, you’ll use Windows Media Player to play back sample data. Be sure to make the  
settings described below.  
1
Open the Control Panel, click Sounds, Speech, and Audio Devices, and then double-click the  
Sounds and Audio Devices.  
*
If you’re using the Classic view, double-click the Sounds and Audio Devices icon.  
2
3
Click the Audio tab to open it, and in the Sound playback area, select OUT (UA-25EX). In the MIDI  
Music Playback area, select UA-25EX.  
Click [OK] to complete the setting.  
*
If you select the UA-25EX as the default playback device, audio alerts and other sounds from  
Windows will also be output from the UA-25EX, and therefore will not be heard from your  
computer’s speakers.  
22  
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Caution when recording or playing back with your software  
Check the following points before you use the UA-25EX to record or play back.  
Connect the UA-25EX to your computer before you start up the software you’re using.  
Do not disconnect the UA-25EX’s USB cable from your computer while your software is  
running. Close the software you’re using before you disconnect the UA-25EX’s USB  
cable from your computer.  
This completes driver installation and settings.  
Next, verify that you hear sound from the UA-25EX. “Verifying that you hear sound” (p. 28)  
23  
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Driver Installation and Settings  
Macintosh users  
Operation of the UA-25EX  
Steps to be performed on the UA-25EX itself are marked by a  
symbol.  
Do not connect the UA-25EX to your computer until you are directed to do so.  
Installing the driver  
*
If the Authenticate dialog box or the dialog that indicates “Installer requires that you type  
your password” appears during the installation, enter your password and click [OK].  
*
What you actually see on the screen may differ depending on your system.  
1
Start up your computer with the UA-25EX disconnected.  
Disconnect all USB cables other than those for a USB keyboard and/or USB mouse (if used).  
*
2
3
4
Close all currently running software.  
Insert the included “UA-25EX Driver CD-ROM” into your CD-ROM drive.  
In the Driver folder of the CD-ROM, double-click the UA25EXUSBDriver.pkg.  
A message such as “This package contains a program that...” or “This installer package needs  
to...” may appear. If so, click [Continue].  
5
6
The screen will indicate “Welcome to the UA-25EX Driver Installer.”  
Click [Continue].  
If the screen indicates “Select a Destination,” click the drive in which the operating system is  
installed to select it, and then click [Continue].  
*
Select your startup disk as the install-destination drive.  
7
8
The screen will indicate “Easy Install” or “Standard Install.”  
Click [Install] or [Upgrade].  
The screen will indicate “Installing this software requires you to restart your computer when  
the installation is done.”  
Click [Continue Installation].  
9
The screen will indicate “Click Restart to finish installing the software.”  
Click the [Restart] to restart your computer.  
*
It may take some time for your Macintosh to restart.  
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Driver Installation and Settings  
10  
Operation of the UA-25EX  
When your computer has started up, use a USB cable to connect the  
UA-25EX to your computer.  
Turn the UA-25EX’s Advanced driver switch ON, and use a USB cable to connect the UA-25EX to  
your computer.  
*
This unit is equipped with a protection circuit. A brief interval (a few seconds) after connecting  
the USB cable is required before the unit will operate normally.  
Next, you need to set your software so it can use the UA-25EX.  
Audio input/output device settings  
In order to use the UA-25EX with your software, you’ll need to select the UA-25EX as the audio  
input/output device. For details on how to do this, refer to the documentation for your software.  
Audio output device  
Audio input device  
UA-25EX 44.1kHz  
UA-25EX 44.1kHz  
*
*
The “44.1kHz” in the device name will depend on the setting of the UA-25EX’s Sample rate  
select switch (p. 13).  
If you’re unable to select the UA-25EX as the audio input/output device in your software, it may  
be that a problem has occurred. Refer to “Problems with settings” (p. 49) in the  
Troubleshooting section.  
Using the UA-25EX with iTunes  
Some software, such as iTunes, will use the audio input/output device that you select in the  
“Sound” preference settings.  
Here’s how to specify the UA-25EX as the sound output device so that it can be used with iTunes.  
*
In a later step, you’ll use iTunes to play back sample data. Be sure to make the settings described  
below.  
*
The content displayed may differ depending on your system.  
1
2
In System Preferences, click Sound.  
Click the Output tab.  
In “Choose a device for sound output,” choose UA-25EX 44.1kHz.  
*
The “44.1kHz” in the device name will depend on the setting of the UA-25EX’s Sample rate  
select switch (p. 13).  
3
When you’ve finished making the setting, close System Preferences.  
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Driver Installation and Settings  
MIDI input/output device settings  
1
In the Applications Utilities folder, double-click Audio MIDI Setup to start it up.  
2
Click the MIDI Devices tab.  
3
Verify that the UA-25EX is shown in the Audio MIDI Setup dialog box.  
*
If the UA-25EX is not shown, or if it is grayed-out, the UA-25EX has not been recognized correctly.  
Try clicking Rescan MIDI. You can also try disconnecting and reconnecting the UA-25EX’s USB  
cable.  
*
If you’ve previously installed a different version of the driver, the former settings could still exist.  
If so, click the grayed-out UA-25EX to select it, and then click Remove Device to delete the  
settings.  
4
5
Click Add Device.  
The screen will indicate “new external device.”  
Specify the Device Name for the new external device.  
1. Click the “new external device” that was added, and then click Show Info.  
2. In the Device Name field, type UA-25EX.  
6
7
Using the mouse, drag the up/down arrows that indicate the input/output ports so that they are  
connected in the following combination.  
The UA-25EX’s /with the added UA-25EX’s /.  
Check to make sure that MIDI transmission and reception takes place normally. Proceed as follows.  
1. Click Test Setup. The mouse cursor will change shape.  
*
If a sound module is connected to the UA-25EX, the following step will cause a fairly loud  
sound to be produced from the sound module; turn down the sound module’s volume  
before you proceed.  
2. If a sound module is connected to the UA-25EX’s MIDI OUT connector, click the corresponding  
external device. If the sound module produces sound, the settings are correct.  
3. Click Test Setup once again to end the test.  
8
Close the Audio MIDI Setup dialog box. This completes the settings.  
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Driver Installation and Settings  
Caution when recording or playing back with your software  
Check the following points before you use the UA-25EX to record or play back.  
Connect the UA-25EX to your Macintosh before you start up the software you’re using.  
Do not disconnect the UA-25EX’s USB cable from your Macintosh while your software is  
running. Close the software you’re using before you disconnect the UA-25EX’s USB  
cable from your Macintosh.  
The UA-25EX will not work with the Mac OS X Classic environment. Use the UA-25EX  
when the classic environment is not running.  
This completes driver installation and settings.  
Next, verify that you hear sound from the UA-25EX. “Verifying that you hear sound” (p. 28)  
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Driver Installation and Settings  
Verifying that you hear sound  
Now let’s play back some sample data to verify that the connections and settings are correct.  
*
Before connecting the UA-25EX to other equipment, you must turn the UA-25EX’s output  
volume and the volume controls of all devices to which the UA-25EX is connected to their  
minimum settings to avoid malfunctions or speaker damage.  
Connecting your audio playback system  
As shown in the illustration, connect your headphones or monitor speakers so that you can hear  
the sound played back from the computer.  
fig.basic_e.eps  
Amplified Speakers  
Front Panel  
Rear Panel  
Computer  
Headphones  
Playing back the sample data  
Here we will play back sample data using the standard functionality provided by your operating  
system. The sample data “TTears(.mp3)” is in the included CD-ROM.  
*
Copyright law prohibits you from using the song data included with this product for any  
purpose other than personal enjoyment unless you have obtained permission from the  
copyright holder. You may not copy this data or use it in a derivative work without permission  
from the copyright holder.  
1
Prepare the CD-ROM.  
Insert the included UA-25EX Driver CD-ROM into the CD-ROM drive of your computer.  
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Driver Installation and Settings  
2
3
From the Sample folder of the CD-ROM, copy the file TTears(.mp3) to your desktop.  
Set the UA-25EX’s Sample rate select switch (p. 13) to the 44.1 kHz position.  
*
After changing the sample rate, you must close all software that is using the UA-25EX,  
disconnect the UA-25EX’s USB cable from your computer, and then reconnect it.  
4
Play back the sample data “TTears”(.mp3).  
Double-click the TTears(.mp3) file you copied to your desktop.  
If you’re using Windows, Windows Media Player will start. If you’re using Macintosh, iTunes will  
start. Click the play button, and the sample data will start playing.  
*
Depending on your system, other playback software may start up. If so, play the sample data as  
described in the documentation for the software you’re using.  
5
Adjust the volume.  
If you’re using headphones, use the UA-25EX’s output volume knob to adjust the volume.  
If you’ve connected your audio playback system to the OUTPUT jacks, use the controls of your audio  
playback system to adjust the volume.  
You should hear the sample data played from the headphones or speakers connected to the  
UA-25EX.  
*
If the Digital input switch is on (digital input mode), you won’t be able to hear the sound being  
played by your computer. Turn the Digital input switch off.  
Did you hear the sample data?  
sound, or if there’s something wrong with the playback, information provided in that  
section will help you solve the problem.  
All connections and driver settings for the UA-25EX are now complete.  
Read the following sections as necessary.  
“Basic connections” (p. 31)  
“Connecting a microphone or a guitar” (p. 32)  
“Connecting a microphone and applying the compressor” (p. 34)  
“Recording a digital signal into your computer” (p. 36)  
“Recording to an MD or other digital device” (p. 37)  
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Basic Connections and Settings  
This section explains the basic connections and data flow for the UA-25EX. Refer to the block  
diagram printed on the front cover of the manual as you read this section.  
*
*
To prevent malfunction and/or damage to speakers or other devices, always turn down the  
volume, and turn off the power on all devices before making any connections.  
When connection cables containing resistors are used, the volume level of equipment  
connected to the inputs (input jacks) may be low. If this happens, use connection cables that do  
not contain resistors.  
*
*
Don’t connect anything to input jacks you are not using.  
Howling could be produced depending on the location of microphones relative to speakers. This  
can be remedied by:  
1. Changing the orientation of the microphone(s).  
2. Relocating microphone(s) at a greater distance from speakers.  
3. Lowering volume levels.  
Note  
When you connect the UA-25EX to your computer, sound will no longer be heard from your  
computer’s speakers.  
Connect your headphones or audio playback system (external monitors) to the UA-25EX.  
If you want to listen to sound through your computer’s speakers, disconnect the UA-25EX  
from your computer.  
30  
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Basic Connections and Settings  
Basic connections  
Use the USB cable to connect the UA-25EX to your computer.  
MIDI data and audio data are transferred in both directions via the USB cable.  
By connecting headphones or monitor speakers as shown in the illustration, you can monitor the  
playback from your software or the sound from an instrument or audio device connected to the  
UA-25EX.  
fig.basic.eps  
Amplified Speakers  
Front Panel  
Rear Panel  
Computer  
Headphones  
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Basic Connections and Settings  
Connecting a microphone or a guitar  
With the connections and settings described here, you can listen to audio data play back from your  
computer while you record just your vocal or guitar performance into your sequencer.  
fig.mic-guitar.eps  
Guitar/Bass  
Specify the  
Sample Rate  
Connect to  
INPUT 2  
Hi-z  
Turn ON when connecting a  
phantom powerd microphone  
Adjust the Input  
Sensitivity  
Adjust the Input  
Sensitivity  
Connect a microphone  
to XLR type jacks  
Connections  
The sound of the microphone connected to INPUT 1 will be recorded in your computer on the left  
(L) channel. If you connect a source to INPUT 2, it will be recorded on the right (R) channel.  
Connect your guitar/bass to INPUT 2.  
Input impedance select switch  
If you’ve connected a guitar/bass to INPUT 2:  
If you’ve connected a microphone to INPUT 2:  
Select Hi-Z ( pressed inward).  
Select Lo-Z ( outward position).  
Phantom power switch  
If you’re using a condenser microphone, turn the phantom power switch on.  
*
If a device that does not use phantom power is connected, you must turn off the phantom  
power switch. Failing to do so may cause malfunction.  
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Basic Connections and Settings  
Input sensitivity knob  
Use the input sensitivity knob to adjust the input level. You can obtain the best recording quality  
by turning the input sensitivity knobs as high as possible without causing the peak indicators to  
light.  
Sample rate select switch  
Set this to the same sample rate as selected in your recording software.  
If you change the UA-25EX’s sample rate, you must disconnect the USB cable that connects the  
UA-25EX to your computer, and then reconnect the USB cable in order for the new setting to take  
effect.  
STEREO/MONO select switch (Direct Monitor section)  
This selects whether the input signal is to be monitored in stereo or in monaural.  
Direct Monitor switch  
You can turn this on to monitor the input signal.  
Turn this off if you want to pass the signal “through” within your software.  
Direct Monitor volume knob  
This adjusts the balance between the monitor volume knob and the volume of the audio being  
played back from your computer.  
Using the direct monitor volume knob to adjust the volume will not affect the recording level.  
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Basic Connections and Settings  
Connecting a microphone and applying the compressor  
You can obtain a fatter sound by applying a compressor to the input signal from the microphone.  
fig.mic-guitar.eps  
Turn to COMP1 when vocal sound is input.  
Turn to COMP2 when instruments sound  
(such as acoustic guitar or percussion) is  
input.  
Adjust the  
Compressor  
Threshold  
Adjust the Input  
Sensitivity  
Turn ON when connecting a  
phantom powerd microphone  
Connect a  
microphone to  
XLR type jacks.  
Connections  
The sound of the microphone connected to INPUT 1 will be recorded in your computer on the left  
(L) channel. If you connect a source to INPUT 2, it will be recorded on the right (R) channel.  
Phantom power switch  
If you’re using a condenser microphone, turn the phantom power switch on.  
*
If a device that does not use phantom power is connected, you must turn off the phantom  
power switch. Failing to do so may cause malfunction.  
Input sensitivity knob  
Use the input sensitivity knob to adjust the input level. You can obtain the best recording quality  
by turning the input sensitivity knobs as high as possible without causing the peak indicators to  
light.  
Compressor/limiter threshold knob  
Turning this knob toward the right will apply stronger compression. This will also increase the gain  
(makeup gain), so you should use the input sensitivity knob and threshold knob to adjust the input  
level so that the peak indicator does not light.  
*
The compressor (and the limiter) does not support stereo signals. The compressor/limiter for  
INPUT 1 and INPUT 2 will each operate independently.  
*
Turning this knob toward the right will strengthen the compressor effect, which may create the  
impression that the tone is being affected. If this occurs, turn the threshold knob back toward  
the left until the tonal change is not noticeable.  
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Basic Connections and Settings  
Sample rate select switch  
Set this to the same sample rate as selected in your recording software.  
If you change the UA-25EX’s sample rate, you must disconnect the USB cable that connects the  
UA-25EX to your computer, and then reconnect the USB cable in order for the new setting to take  
effect.  
STEREO/MONO select switch (Direct Monitor section)  
This selects whether the input signal is to be monitored in stereo or in monaural (p. 12). If you’ve  
connected a microphone as shown in this example, choose the monaural (MONO) setting.  
Direct Monitor switch  
If this is on, the direct monitor indicator will be lit. Also you’ll be able to monitor the sound with the  
compressor applied.  
Direct Monitor volume knob  
This adjusts the balance between the monitor volume and the volume of the audio being played  
back from your computer.  
Using the direct monitor volume knob to adjust the volume will not affect the recording level.  
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Basic Connections and Settings  
Recording a digital signal into your computer  
fig.digital.eps  
MD/CD/DAT Player,  
HDD Recorder, etc.  
ON  
Specify the Sample Rate:  
Set this to match the sample rate of your  
digital playback device.  
Connections  
Connect your digital device to the digital input connector.  
Sample rate select switch  
Set this to match the sample rate of the software you’re using to record your digital playback  
device.  
If you change the UA-25EX’s sample rate, you must disconnect the USB cable that connects the  
UA-25EX to your computer, and then reconnect the USB cable in order for the new setting to take  
effect.  
*
If you want to record at 96 kHz, you must set this switch to “96R” (record).  
Digital input switch  
Turn this on so that the UA-25EX will synchronize to the digital signal being input to the digital  
input connector.  
Other notes  
The direct monitor volume control will have no effect.  
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Basic Connections and Settings  
Recording to an MD or other digital device  
fig.digital2.eps  
MD/DAT Recorder,  
HDD Recorder, etc.  
Specify the Sample Rate:  
Select a sample rate that your recording  
device is able to record. Choose the same  
sample rate as your software or the audio  
data you are playing back.  
Connections  
Connect your digital device to the digital output connector.  
Sample rate select switch  
Set this to match the sample rate of your digital recording device and the sample rate of your  
software or the audio data you are playing back.  
If you change the UA-25EX’s sample rate, you must disconnect the USB cable that connects the  
UA-25EX to your computer, and then reconnect the USB cable in order for the new setting to take  
effect.  
*
If you recorded at 96 kHz, you must set this switch to “96P” (playback).  
Other notes  
The signals being input from the combo input jacks are not output directly from the digital output  
connector.  
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Appendices  
Driver settings  
The UA-25EX’s dedicated driver allows you to view or change the settings.  
*
You cannot change the settings of the standard driver provided by the operating system  
( “About standard driver mode” p. 45).  
Viewing or changing the settings (Windows)  
1
Use a USB cable to connect the UA-25EX to your computer.  
2
Open the Control Panel, and double-click the UA-25EX icon.  
*
If you don’t see the UA-25EX icon, switch to the Classic View.  
3
The UA-25EX Driver Settings dialog box will appear.  
Audio Buffer Size  
Normally, you should leave the buffer size at the sixth mark from the left.  
*
If you’ve changed the buffer size, you must restart the software that’s using the UA-25EX.  
Alternatively, if you’re using software that has an audio device test function, execute the  
software’s test function.  
*
Depending on the software you’re using, its audio settings may also have a buffer size  
adjustment.  
Use Smaller ASIO Buffer Size  
By selecting this check box, you can decrease the buffer size when using ASIO compatible software.  
If you experience dropouts in the sound with this check box selected, clear the check box.  
*
Clear this check box if you want to adjust the Audio Buffer Size.  
Use ASIO Direct Monitor  
Select this check box if you want to use ASIO Direct Monitor functionality with your ASIO  
compatible software.  
Light Load  
Normally, you should leave this check box cleared.  
*
If you’ve made a change to the settings, you must disconnect the USB cable from the UA-25EX  
and then reconnect it in order for the new settings to take effect.  
Show “README”  
This displays the online manual for the driver.  
Driver version  
This displays the version of the currently installed driver.  
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Appendices  
Viewing or changing the settings (Macintosh)  
1
Use a USB cable to connect the UA-25EX to your computer.  
2
In System Preferences, click UA-25EX.  
The Driver Settings screen will appear.  
Audio Buffer Size  
This adjusts the driver’s audio input/output buffer size.  
If you experience dropouts or noise when playing or recording even after you have adjusted the  
audio buffer size in your software, try increasing this buffer size setting.  
*
Some software does not allow you to adjust the buffer size.  
Recording Margin  
If there are dropouts or noise in the recorded audio data even after you have adjusted the audio  
buffer size in your software and have also adjusted the Audio Buffer Size, try increasing this  
recording margin setting.  
*
Some software does not allow you to adjust the buffer size.  
Recording Timing  
Adjust this setting if the timing of the recorded audio data is incorrectly aligned.  
*
If audio software is running, these settings will not be applied immediately even if you click  
[Apply]. Close all audio software; the settings will be applied the next time you start up the  
software.  
Driver signing option settings (Windows XP)  
Driver installation may not be possible due to your settings for “Driver Signing Options.” Refer to  
the following, and make the appropriate settings.  
1
Open the Control Panel, click Performance and Maintenance, and then click the System icon.  
*
If you’re using the Classic view, double-click System.  
2
Click the Hardware tab, and then click [Driver Signing].  
The Driver Signing Options dialog box will appear.  
3
4
5
In the Driver Signing Options dialog box, choose Warn or Ignore, and click [OK].  
Click [OK] to close the System Properties dialog box.  
Install the driver as described in the procedure for Installing the driver (p. 20).  
*
Once you’ve finished installing the driver, change the driver signing options back to their  
original settings.  
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Appendices  
Reinstalling the driver  
If a problem occurred while installing the driver, use the following procedure to reinstall it.  
1
Uninstall the UA-25EX driver as described in Removing the driver (p. 40).  
2
Install the driver once again as described in Driver Installation and Settings (p. 15).  
Removing the driver  
Your computer may fail to correctly recognize the UA-25EX if the driver could not be installed  
according to the specified procedure. If so, you’ll need to delete the driver that was detected by  
mistake. Use the following procedure to remove the driver, and then install the driver once again  
according to the procedure given in Driver Installation and Settings (p. 15).  
Windows users  
*
The displayed content may differ depending on your system.  
1
Start up Windows with the UA-25EX disconnected.  
Make sure that all USB cables other than those for a USB keyboard and USB mouse (if used) are  
disconnected.  
Log on using a user name whose account type is computer administrator (such as Administrator).  
2
3
Insert the included UA-25EX Driver CD-ROM into your computer’s CD-ROM drive.  
On the CD-ROM, navigate to the following folder and double-click Uninstal.exe.  
Windows Vista: Driver\Vista\Uninstal.exe  
Windows XP:  
Driver\XP\Uninstal.exe  
4
5
If you’re using Windows Vista, a user account control warning will appear; click [Continue].  
The screen will indicate “The installed UA-25EX Driver will be uninstalled.” Click [OK].  
If any other message appears, proceed as directed by the message.  
6
The screen will indicate “Uninstallation was completed.” Click [OK] to restart Windows.  
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Appendices  
Macintosh users  
*
The displayed content may differ depending on your system.  
1
Start up your Macintosh with all USB cables disconnected.  
Make sure that all USB cables other than those for a USB keyboard and USB mouse are  
disconnected.  
2
3
4
Insert the included UA-25EX Driver CD-ROM into the CD-ROM drive of your Macintosh.  
Navigate to the CD-ROM’s Driver folder, and double-click UA25EX_Uninstaller.  
The screen will indicate “This uninstalls UA-25EX driver from this Macintosh”. Click [Uninstall].  
If any other message appears, proceed as directed by the message.  
5
6
The screen will indicate “Are you sure to uninstall the driver?” Click [OK].  
An Authenticate dialog box or the dialog that indicates “Installer requires that you type your  
password” will appear. Enter the password and click [OK].  
7
The screen will indicate “Uninstallation is completed.” Click [Restart] to restart your Macintosh.  
*
It may take some time for the Macintosh to restart.  
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Appendices  
Power management settings  
If you experience problems such as interrupted notes or dropouts in the sound, you may be able to  
solve the problem by changing your computer’s power management settings.  
Windows Vista users  
1
Open the Control Panel, click System and Maintenance, and then click Power Options.  
*
If you’re using the Classic view, double-click the Power Options icon.  
2
3
4
5
In Select a power plan, choose High performance.  
In the High performance area, click Change plan settings.  
Click Change advanced power settings.  
In Power Options Advanced Settings, click the “+” symbol for Hard Disk, and click the “+”  
symbol for Turn off hard disk after to open it.  
6
7
8
Click Setting (Minutes), and click the down arrow to change the setting to Never.  
Click [OK] to close the Power Options window.  
Close the Edit Plan Settings screen.  
Windows XP users  
1
Open the Control Panel, click Performance and Maintenance, and click Power Options.  
If you’re using the Classic view, double-click the Power Options icon.  
*
2
3
Click the Power Schemes tab, and in the Power Schemes field, select Always On.  
Click [OK] to close Power Options Properties.  
Macintosh users  
1
In System Preferences, click Energy Saver.  
2
3
Click Options.  
In the Processor Performance field, choose Highest.  
*
On some Macintosh it may not be possible to set the “Processor Performance.”  
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Appendices  
System “Performance” settings (Windows)  
You may be able to solve the problem by changing the “Performance” setting of the system as  
described below.  
Windows Vista users  
1
Open the Control Panel, click System and Maintenance, and click System.  
If you’re using the Classic view, double-click the System icon.  
*
2
3
In the list of tasks shown at the left, click Advanced System Settings.  
A User Account Control dialog box will appear; click [Continue].  
*
If you’re asked to enter an administrator password, log on to Windows as a user whose account  
type is administrator, and make the setting again.  
4
5
6
Click Performance [Settings], and click the Advanced tab.  
Choose Background services and click [OK].  
Click [OK] to close System Properties.  
Windows XP users  
1
Open the Control Panel, click Performance and Maintenance, and double-click System.  
If you’re using the Classic view, double-click the System icon.  
*
2
3
4
5
Click the Advanced tab, and click Performance [Settings].  
Click the Advanced tab.  
Choose Background services, and click [OK].  
Click [OK] to close System Properties.  
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Appendices  
System volume settings  
Windows Vista users  
1
Open the Control Panel, and click Hardware and Sound.  
*
If you’re using the Classic View, click Control Panel Home to exit the Classic View.  
2
3
In Sound, click Adjust system volume.  
The Volume Mixer will appear. From the Device menu, select the UA-25EX’s OUT and adjust the  
volume.  
4
Adjust the Device or Application volume.  
*
*
If the Mute button is on, click the mute button once again to turn it off.  
You can also access the volume mixer by right-clicking the speaker icon located in the bottom  
right corner of your screen, and choosing Open Volume Mixer.  
Windows XP users  
1
Open the Control Panel, and double-click Sounds and Audio Devices.  
*
If you don’t see the Sounds and Audio Devices icon, click Sounds, Speech, and Audio Devices,  
and then click Sounds and Audio Devices.  
2
3
Click the Audio tab.  
In the Sound playback area, make sure that OUT (UA-25EX) is selected as the Default device, and  
click [Volume].  
4
The Volume Control will appear; adjust the Wave volume.  
*
If the Mute setting is checked, clear the check mark.  
Macintosh users  
1
In System Preferences, click Sound.  
2
3
Click the Output tab.  
In the Choose a device for sound output field, make sure that the UA-25EX is selected, and use  
the Output volume slider to adjust the volume.  
*
If Mute is checked, clear the check mark.  
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Appendices  
About standard driver mode  
Use this mode if you want to use the standard driver provided by your operating system.  
*
The UA-25EX will operate at 44.1 kHz/16-bit, regardless of the setting of the sample rate select  
switch (p. 13).  
*
*
This mode does not support ASIO drivers.  
The MIDI IN/OUT connectors cannot be used in this mode.  
Installing the standard driver  
1
Start up your computer with the UA-25EX disconnected.  
Disconnect all USB cables other than those for a USB keyboard and USB mouse (if used).  
2
Close any software that is running.  
3
Set the UA-25EX’s Advanced driver switch to OFF.  
4
Connect the UA-25EX to your computer.  
The driver will be installed automatically.  
Input/output device settings  
In order to use the UA-25EX with your software, you’ll need to choose the UA-25EX as the audio  
input/output device.  
For details on how to make this setting, refer to the documentation of your software.  
Windows Vista users  
Audio output device  
Audio input device  
Speakers (UA-25EX)  
Line (UA-25EX)  
*
For details on settings for using the UA-25EX with Windows Media Player, refer to Input/output  
device settings (p. 18), and make the audio input/output settings as directed.  
Windows XP users  
Audio output device  
Audio input device  
UA-25EX  
UA-25EX  
*
For details on settings for using the UA-25EX with Windows Media Player, refer to Input/output  
device settings (p. 22), and make the audio input/output settings as directed.  
Macintosh (Mac OS X) users  
Audio output device  
Audio input device  
UA-25EX  
UA-25EX  
*
For details on audio input/output settings for Mac OS X, refer to Audio input/output device  
settings (p. 25).  
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Troubleshooting  
If you experience problems, read this chapter first. It contains information that will help you solve  
the problem.  
*
For help with Windows or Macintosh operation, refer to the documentation for your computer  
or operating system.  
Problems when installing the driver  
Can’t start up the installer  
Is the CD-ROM inserted correctly in your CD-ROM drive?  
Make sure that the CD-ROM is correctly inserted in the CD-ROM drive.  
Could the CD-ROM itself or the lens of your CD-ROM drive be dirty?  
The installer may not operate correctly if the CD-ROM or the lens of your CD-ROM drive is dirty. Use  
a commercially available CD cleaner or lens cleaner to clean the disc or lens.  
Are you attempting to install from a networked CD-ROM drive?  
The driver cannot be installed from a CD-ROM drive on the network.  
A warning or error appears during the installation (Windows)  
Could you have connected the UA-25EX to your computer before installing the driver?  
If you connect the UA-25EX to your computer before installing the driver, an error message may  
appear when you begin the installation.  
Uninstall the UA-25EX driver as described in “Removing the driver” (p. 40), and then install the  
UA-25EX driver once again as described in “Driver Installation and Settings” (p. 15).  
Are there any devices labeled “Other,” “Unknown,” or “?/!/X” in the Device Manager? (Windows)  
If driver installation was not completed successfully, the partially installed driver may remain in an  
incomplete state.  
Uninstall the UA-25EX driver as described in “Removing the driver” (p. 40), and then install the  
UA-25EX once again as described in “Driver Installation and Settings” (p. 15).  
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Troubleshooting  
Can’t install the driver according to the procedure  
Did you log on to Windows with the appropriate user privileges?  
You must log onto Windows using one of the following user names.  
A user name belonging to the Administrators group, such as Administrator  
A user name whose account type is Computer Administrator  
*
For details, ask the system administrator for your computer.  
In some cases, you may be unable to install the driver because of the “Driver signing option”  
settings.  
Refer to “Driver signing option settings (Windows XP)” (p. 39) and make the appropriate settings.  
Could other software be running, perhaps in the background (such as anti-virus software)?  
The installation may not occur correctly if other software is running. Be sure to close all other  
software before you perform the installation.  
Installation is not successfully completed when you connect the UA-25EX  
Could the UA-25EX’s Advanced driver switch be OFF?  
Turn the UA-25EX’s Advanced driver switch ON, and install the driver once again.  
After you connect the UA-25EX, it may take several tens of seconds or several minutes before it is  
recognized by your computer.  
This is not a malfunction.  
Please wait until the Found New Hardware Wizard appears.  
Is the UA-25EX connected?  
Make sure that the UA-25EX is correctly connected to your computer.  
Could your computer be operating on its battery?  
Operation may be unstable if your computer is operating on battery power.  
Please use your computer with its power supply connected.  
Could you be using a bus-powered USB hub (a hub that does not require a power supply)?  
The UA-25EX cannot be used with a bus-powered USB hub (a hub that does not need a separate  
power supply). Use it with a self-powered USB hub (a hub that has an internal power supply or AC  
adaptor).  
Could a USB device other than a mouse or keyboard be connected?  
Disconnect all USB devices (other than a mouse and keyboard, if used) from your computer before  
performing the installation.  
Check the power management settings of your computer.  
Your computer’s power management settings may be limiting the power that is supplied to USB.  
Take a look at your computer’s power management settings.  
“Power management settings” (p. 42)  
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Troubleshooting  
Does your computer meet the requirements of the USB specification?  
Operation may be unstable if your computer does not meet the electrical requirements of the USB  
specification.  
In this case, you may be able to solve the problem by connecting a self-powered USB hub (a USB  
hub that has an internal power supply or an AC adaptor).  
“Found New Hardware Wizard” appears even though you’ve installed the driver  
(Windows XP)  
Could you have connected the UA-25EX to a different USB connector than the one you used when  
installing the driver?  
If your computer or USB hub has two or more USB connectors, connecting the UA-25EX to a  
different USB connector may cause your computer to ask for the driver file even though the driver  
has already been installed.  
This behavior does not indicate a malfunction.  
Install the driver as described in step 8 of “Installing the driver” (p. 21).  
A number such as “2-” appears at the beginning of the device name  
(Windows Vista)  
Could you have connected the UA-25EX to a different USB port?  
If you connect the UA-25EX to a different USB port, some operating systems may automatically add  
a number to the beginning of the device name, but this should not be a problem when using the  
UA25EX. If you want to return to the device name that does not have this number, you can either  
connect the UA-25EX to the same USB port as when you installed it, or install the driver once again.  
“Reinstalling the driver” (p. 40)  
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Troubleshooting  
Problems with settings  
Can’t select/use the UA-25EX within software or in system settings  
Could the UA-25EX be in use by other software?  
Close all software that’s currently running, disconnect the UA-25EX’s USB cable, and then  
reconnect it.  
If this does not solve the problem, reinstall the driver.  
“Reinstalling the driver” (p. 40)  
Is the driver installed correctly?  
Driver installation may have failed. Please reinstall the driver.  
“Reinstalling the driver” (p. 40)  
Is the UA-25EX device name shown?  
If the device name is not displayed, it may be that the driver installation failed. Please reinstall the  
driver.  
“Reinstalling the driver” (p. 40)  
Could the computer to which the UA-25EX is connected have entered standby (suspend) mode,  
hibernate mode, or sleep mode?  
Close all software that uses the UA-25EX, disconnect the UA-25EX’s USB cable, and then reconnect  
it.  
If this does not solve the problem, restart your computer.  
Could you have disconnected and reconnected the USB cable while using the UA-25EX?  
Close all software that uses the UA-25EX, disconnect the UA-25EX’s USB cable, and then reconnect  
it.  
If this does not solve the problem, restart your computer.  
Could the UA-25EX have been connected when the computer started up?  
On some computers, the UA-25EX may be unusable if it is already connected when the computer  
starts up.  
Start up your computer, and then connect the UA-25EX.  
Are you using the Media Player included with Windows Vista?  
On Windows Vista, the UA-25EX’s MIDI device cannot be selected by Media Player.  
Can’t use or select the UA-25EX from your ASIO compatible software  
Could the UA-25EX’s Advanced driver switch be turned OFF?  
If you’re using ASIO compatible software, turn the Advanced driver switch ON.  
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Troubleshooting  
Problems with playback or recording  
No sound from your computer’s speakers  
If you connect the UA-25EX to your computer, sound will not be heard from your computer’s  
speakers.  
This is not a malfunction.  
Connect your headphones or audio playback system (external monitors) to the UA-25EX.  
Sound played by your computer is inaudible or too soft  
Can you hear sound by connecting headphones?  
If you can hear sound through headphones connected to the UA-25EX’s headphone jack, check  
that you have correctly connected your audio playback system (external monitors), and adjust the  
volume of your equipment.  
If the sound in your headphones is inaudible or too soft, check the other troubleshooting items.  
Are the volume settings of the UA-25EX itself set appropriately?  
Use the UA-25EX’s front panel output volume and direct monitor volume knob to adjust the  
volume.  
Could the UA-25EX’s digital input switch be turned on (digital input mode)?  
If the UA-25EX is set to digital input mode (p. 11), the audio signal being received at the digital  
input jack will be output.  
The audio signal from your computer will not be output.  
Could the sample rate select switch be to set to “96R”?  
If you want to play back at 96 kHz, set the sample rate select switch to “96P.”  
Could the Windows or Macintosh system volume be turned down?  
“System volume settings” (p. 44)  
Insufficient volume from your guitar  
Are you using the correct connector?  
Connect your guitar to the INPUT 2 combo input jack.  
Is the input impedance select switch set correctly?  
Set the input impedance select switch to the Hi-Z position.  
Also check the contents of “Insufficient volume from a device connected to the combo input jack.”  
“Insufficient volume from a device connected to the combo input jack” (p. 51)  
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Troubleshooting  
Insufficient volume from your microphone  
Are you using the correct connector?  
Connect your microphone to the XLR type connector of the combo input jack.  
Also check the contents of “Insufficient volume from a device connected to the combo input jack.”  
“Insufficient volume from a device connected to the combo input jack” (p. 51)  
Insufficient volume from a device connected to the combo input jack  
Is the direct monitor volume knob raised appropriately?  
Turn the direct monitor volume knob toward the right to adjust the volume.  
Is the input level appropriate?  
Try turning the UA-25EX’s input sensitivity knob toward the right to increase the input level.  
Could you be using a cable that contains a resistor?  
Make connections using a cable that does not contain an internal resistor (such as one from the  
Roland PCS series).  
Distorted sound from a device connected to the combo input jack  
Is the peak indicator lit?  
Try turning the UA-25EX’s input sensitivity knob toward the left to decrease the input level.  
Playback contains clicks, dropouts, or other problems  
Try adjusting the audio buffer size of your software  
If your software allows you to adjust the audio buffer size, try changing the setting. Normally, clicks  
and pops can be eliminated by increasing the buffer size.  
Try adjusting the audio buffer size of the driver  
If your software does not allow you to adjust the buffer size, or if adjusting the buffer size in your  
software does not solve the problem, you may be able to solve the problem by changing the  
driver’s audio input/output buffer size.  
Try adjusting the buffer size as described in “Driver settings” (p. 38).  
Check the power management settings  
You may be able to eliminate clicks and pops by changing your system’s power management  
settings.  
“Power management settings” (p. 42)  
Try updating the driver of your display adaptor (Windows)  
You may be able to eliminate clicks and pops by updating the driver for the display adaptor  
installed in your computer.  
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Troubleshooting  
Have you set the system’s “Performance” setting? (Windows)  
You may be able to solve the problem by changing the “Performance” setting of the system.  
“System “Performance” settings (Windows)” (p. 43)  
Do the sample rate settings match?  
The sample rate setting of your software must match the sample rate setting of the UA-25EX itself.  
*
After changing the sample rate setting of the UA-25EX itself, you must close all software that uses  
the UA-25EX, disconnect the UA-25EX’s USB cable from your computer, and then reconnect it.  
Could other software programs be running?  
Close software that you’re not using.  
If the window of a Windows program has been closed but it is still shown in the taskbar, that  
program is still running. Close all unneeded software that’s shown in the taskbar.  
Check the driver setting “Light Load” (Windows)  
You may be able to solve the problem by selecting the “Light Load” check box in the driver settings  
dialog box.  
“Driver settings” (p. 38)  
Have you tried Windows Update or Microsoft Update? (Windows)  
Try using Windows Update or Microsoft Update (provided by the Microsoft Corporation) to update  
your system to the latest version.  
Try disabling the LAN  
In your computer’s Device Manager, try disabling LAN (wired/wireless).  
If this eliminates the clicks and pops, it may be that updating your LAN driver or BIOS may solve the  
problem. Check whether updated software is available.  
Could you have connected the UA-25EX to a USB hub?  
Try connecting the UA-25EX directly to a USB connector on your computer.  
Are you using the included USB cable?  
You must use the included USB cable when using the UA-25EX. Some commercially available USB  
cables do not meet the requirements of the USB standard, and this may prevent the UA-25EX from  
operating correctly.  
Could you have updated the Mac OS X software while UA-25EX was connected?  
It has been found that clicks or pops can occur if you performed a Mac OS X software update while  
the UA-25EX was connected. If so, install the driver once again.  
Noise or distortion occurs elsewhere than in the playback from your computer  
Is a guitar connected?  
If the noise decreases when you lower your guitar’s volume, it may be that your guitar’s pickups are  
being affected by noise from your computer or display. Move the guitar as far away from your  
computer as possible.  
Could an unused microphone or guitar have been left connected?  
If an unused microphone or guitar is connected to the UA-25EX, disconnect the microphone or  
guitar and turn the input sensitivity knob all the way to the left to lower the input level.  
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Troubleshooting  
Check the setting of the ground lift switch.  
See whether moving the UA-25EX’s ground lift switch to LIFT will eliminate the noise. If you’ve used  
USB to connect a MIDI sound module to the same computer as the UA-25EX, and have connected  
the MIDI sound module’s output to the UA-25EX’s combo input jacks, noise from the computer  
may be heard from the UA-25EX.  
If the noise is not eliminated by setting the ground lift switch to LIFT, try connecting your MIDI  
sound module and the UA-25EX to your computer via a self-powered USB hub (a USB hub that  
contains an internal power supply or uses an AC adaptor), or connect your MIDI sound module via a  
serial connection or via a MIDI interface.  
Have you connected the ground terminal?  
You may be able to solve the problem by grounding a metal component of your computer or the  
ground pin of your computer’s AC adaptor. Also check whether there might be a device nearby  
that is emitting a strong electromagnetic field, such as a television or microwave oven.  
Recorded sound is too loud or too soft  
Is the input level appropriate?  
Use the UA-25EX’s input sensitivity knob to adjust the input level. If your software is able to adjust  
the input level, check its input level setting.  
Can’t play or record  
Was the driver installed correctly?  
Driver installation may have failed. Reinstall the driver.  
“Reinstalling the driver” (p. 40)  
Could the UA-25EX’s sample rate be set to 96 kHz?  
If you’re using the UA-25EX at 96 kHz, you can’t play and record simultaneously.  
To perform playback, set the sample rate select switch to 96P.  
To record, set the sample rate select switch to 96R.  
Do the sample rate settings match?  
*
After changing the sample rate setting of the UA-25EX itself, you must close all software that  
uses the UA-25EX, disconnect the UA-25EX’s USB cable from your computer, and then reconnect  
it.  
Did you make input/output device settings for your software?  
Refer to the owner’s manual of your software and to the following pages, and select the UA-25EX as  
the input/output device.  
Windows Vista: “Input/output device settings” (p. 18)  
Windows XP:  
Mac OSX:  
“Input/output device settings” (p. 22)  
“Audio input/output device settings” (p. 25),  
“MIDI input/output device settings” (p. 26)  
53  
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Troubleshooting  
Could the UA-25EX be in use by other software?  
Close all software that’s currently running, disconnect the UA-25EX’s USB cable, and then reconnect it.  
If this does not solve the problem, reinstall the driver.  
“Reinstalling the driver” (p. 40)  
Could the computer to which the UA-25EX is connected have entered standby (suspend) mode,  
hibernate mode, or sleep mode?  
Close all software that uses the UA-25EX, disconnect the UA-25EX’s USB cable, and then reconnect it.  
If this does not solve the problem, restart your computer.  
Could you have disconnected and reconnected the USB cable while using the UA-25EX?  
Close all software that uses the UA-25EX, disconnect the UA-25EX’s USB cable, and then reconnect it.  
If this does not solve the problem, restart your computer.  
Could the UA-25EX have been connected when the computer started up?  
On some computers, the UA-25EX may be unusable if it is already connected when the computer  
starts up.  
Start up your computer, and then connect the UA-25EX.  
Can’t play or record 24-bit audio data  
Does your software support 24-bit audio data?  
Check whether the software you’re using supports playback and recording of 24-bit audio data.  
Is your software set correctly?  
Make sure that your software is set to play and record 24-bit audio data.  
Can’t record via a digital connection / Something is wrong with the recorded sound  
Is the digital input switch turned “on”?  
If you want to digitally capture audio data from a CD or MD into your computer, turn on the digital  
input switch to select digital input mode (p. 11).  
Could the digital audio data contain SCMS flags?  
The UA-25EX complies with SCMS; if data containing SCMS flags (such as audio digitally copied  
from a commercial music CD) is input via the digital input connector, the UA-25EX will not allow  
this data to be recorded to your computer.  
The sound will be output from the master output jacks and the headphone jack.  
Does the UA-25EX’s sample rate setting match the sample rate setting of the digital device from  
which you’re trying to record?  
Set the UA-25EX to the same sample rate as the device from which you’re recording. If you switch  
the UA-25EX’s sample rate, you must disconnect the UA-25EX’s USB cable from the computer, and  
then reconnect it in order to make the new setting take effect.  
Can’t record or play MIDI  
Is the Advance driver switch turned ON?  
MIDI recording and playback is not possible if the Advance driver switch is OFF.  
54  
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Specifications  
UA-25EX: USB Audio Interface  
Record:  
1 pair of stereo  
Number of Audio Record/  
Playback Channels  
Playback:  
DIGITAL IN SWITCH = OFF:  
DIGITAL IN SWITCH = ON:  
1 pair of stereo  
Full duplex (except for 96 kHz setting)  
Recording only  
PC interface:  
24 bits (Advanced driver switch=ON)  
Signal Processing  
16 bits (Advanced driver switch=OFF)  
24 bits (linear)  
AD/DA Conversion:  
Digital output:  
Digital input:  
AD/DA Conversion:  
44.1/48/96 kHz  
44.1/48/96 kHz  
44.1/48/96 kHz  
Sampling Frequency  
*
Advanced driver switch=OFF: 44.1 kHz only  
96.0 kHz:  
48.0 kHz:  
44.1 kHz:  
20 Hz to 40 kHz (+0 dB/-2 dB)  
20 Hz to 22 kHz (+0 dB/-1 dB)  
20 Hz to 20 kHz (+0 dB/-1 dB)  
Frequency Response  
Nominal Input Level  
Input Jack L, R (XLR type):  
Input Jack L, R (1/4 inch TRS phone type):  
-60 to -20 dBu  
-36 to +4 dBu  
*
Maximum input level: Nominal Input Level + 12 dB  
Output Jack L, R (1/4 inch TRS phone type):  
Output Jack L, R (RCA phono type):  
+4 dBu (balanced)  
-2 dBu  
Nominal Output Level  
*
Maximum output level: Nominal Output Level + 12 dB  
Output Jack:  
Input terminated with 1 k ohms, OUTPUT VOLUME: max.,  
INPUT MONITOR: min., IHF-A, typ.  
-96 dBu (S/N ratio: 105 dB typ.)  
Residual Noise Level  
Microphone Pre-Amp  
*
Phantom power 48 V / 8 mA max.  
Analog Limiter or compressor  
USB  
Digital input/output (Optical type)  
Conforms to IEC60958 consumer format.  
MIDI input/output  
Interface  
55  
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Specifications  
<Front Panel>  
Input Jack L, R  
XLR type (balanced, phantom power +48 V)  
1/4 inch TRS phone type (balanced)  
Input Jack R: high impedance is supported.  
Headphones Jack  
Stereo 1/4 inch phone type  
<Rear Panel>  
*
Connectors  
Digital Input Connector (Optical type)  
Digital Output Connector (Optical type)  
Output Jack L, R  
1/4 inch TRS phone type (balanced)  
RCA phono type  
MIDI Connectors (IN, OUT)  
USB Connector (B type)  
Power Supply  
Current Draw  
USB Bus Power  
480 mA  
164 (W) x 133 (D) x 46 (H) mm  
6-1/2 (W) x 5-1/4 (D) x 1-13/16 (H) inches  
Dimensions  
Weight  
565 g  
1 lb. 4 oz.  
Owner’s Manual, USB cable, UA-25EX Driver CD-ROM,  
Cakewalk Production Plus Pack CD-ROM, License agreement  
Accessories  
56  
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Index  
A
Macintosh .................................................. 24  
Windows Vista ............................................ 16  
Windows XP ............................................... 20  
iTunes ............................................................... 25  
Advanced driver switch .................................... 14  
ASIO .................................................................. 38  
B
Balance ............................................................. 10  
Bass guitar ........................................................ 32  
BYPASS ............................................................. 14  
L
LIFT ................................................................... 13  
Limiter ............................................................... 11  
Limiter type switch ........................................... 14  
LoopBack mode ................................................ 11  
Low impedance ................................................ 10  
Lo-Z ................................................................... 10  
C
Cakewalk Production Plus Pack .......................... 8  
Combo input jacks ............................................ 10  
Compressor ...................................................... 11  
Compressor/Limiter type switch ...................... 14  
Condenser microphone ........................ 10, 32, 34  
M
Macintosh ......................................................... 24  
Master output jack ............................................ 13  
Microphone ................................................ 32, 34  
MIDI connector ................................................. 13  
D
Digital input ................................................ 11, 13  
Digital input mode ........................................... 11  
Digital output connector .................................. 13  
Direct monitor ............................................ 33, 35  
Direct monitor indicator ................................... 12  
Direct monitor switch ....................................... 12  
Direct monitor volume ..................................... 12  
Driver ................................................................ 15  
Driver Signing Options Settings ....................... 39  
N
NOR ................................................................... 13  
NORMAL ........................................................... 13  
O
Output  
Digital audio ......................................... 13, 37  
Headphone ................................................ 12  
Master ........................................................ 13  
Volume ....................................................... 12  
G
Ground lift switch ............................................. 13  
Guitar ................................................................ 32  
P
H
Peak indicator ................................................... 11  
Phantom power ................................................ 10  
Phantom power switch ..................................... 14  
Phone type jack ................................................ 10  
Preamp ............................................................. 10  
Headphone jack ................................................ 12  
High impedance ............................................... 10  
Hi-Z ................................................................... 10  
I
Impedance ........................................................ 10  
R
Input  
RCA phono jack ................................................. 13  
Analog audio ............................................. 10  
Combo input jack ...................................... 10  
Digital audio .................................. 11, 13, 36  
Impedance ........................................... 10, 32  
Level .......................................................... 10  
S
Sample rate ................................................. 33, 35  
Sample rate select switch ................................. 13  
SLEEVE .............................................................. 13  
Standard driver mode ....................................... 45  
STEREO/MONO select switch ............................ 12  
Sensitivity .................................................. 10  
Installing the driver  
57  
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Index  
T
Threshold knob ................................................. 11  
TRS jack ............................................................. 13  
TRS type ............................................................ 10  
U
Unbalance ........................................................ 10  
Uninstall the driver  
Macintosh .................................................. 41  
Windows .................................................... 40  
USB cable ............................................................ 9  
USB connector .................................................. 14  
USB indicator .................................................... 12  
V
Vocal ................................................................. 32  
W
Windows Media Player  
Windows Vista ........................................... 18  
Windows XP ............................................... 22  
Windows Vista .................................................. 16  
Windows XP ...................................................... 20  
X
XLR type ............................................................ 10  
58  
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MEMO  
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MEMO  
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MEMO  
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For EU Countries  
For China  
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fig.09B-17.eps  
For EU Countries  
For the USA  
This product complies with the requirements of EMC Directive 2004/108/EC.  
FEDERAL COMMUNICATIONS COMMISSION  
RADIO FREQUENCY INTERFERENCE STATEMENT  
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.  
These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment  
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause  
harmful interference to radio communications. However, there is no guarantee that interference will not occur in  
a
particular  
installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning  
the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:  
Reorient or relocate the receiving antenna.  
Increase the separation between the equipment and receiver.  
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.  
Consult the dealer or an experienced radio/TV technician for help.  
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:  
(1) this device may not cause harmful interference, and  
(2) this device must accept any interference received, including interference that may cause undesired operation.  
Unauthorized changes or modification to this system can void the users authority to operate this equipment.  
This equipment requires shielded interface cables in order to meet FCC class B Limit.  
For Canada  
NOTICE  
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.  
AVIS  
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.  
(
)
For C.A. US Proposition 65  
WARNING  
This product contains chemicals known to cause cancer, birth defects and other reproductive harm, including lead.  
For the USA  
DECLARATION OF CONFORMITY  
Compliance Information Statement  
Model Name :  
Type of Equipment :  
Responsible Party :  
UA-25EXCW  
USB Audio Interface  
Cakewalk Inc.  
Address : 268 Summer Street, Boston, MA 02210  
Telephone : (617) 423-9004  
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