Owner’s Manual
Before using this unit, carefully read the sections entitled: “USING THE UNIT SAFELY” (p. 13) and “IMPORTANT NOTES”
(p. 14).
These sections provide important information concerning the proper operation of the unit. Additionally, in order to
feel assured that you have gained a good grasp of every feature provided by your new unit, this manual should be
read in its entirety. The manual should be saved and kept on hand as a convenient reference.
Copyright © 2010 BOSS CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without the written permission of BOSS
CORPORATION.
Main Features
A large number of realistic preamp
modeling algorithms using COSM
The unit is equipped with a diverse array of COSM
amplifiers (ten types), ranging from clean sound
to high-gain sound.
Thanks to the Sound Library, you can
get just the right sound when you
need it
MODULATION .....................................................................................7
You can obtain the ideal sound simply by
selecting a category and a variation.
Super Stack feature
You can get the powerful sound of a large
stacked tube amp with just the simple press of a
button.
Phrase Loop feature
You can record and loop the playback of phrases
up to 38 seconds long.
Can be linked with a PC using USB
You can use the included SONAR LE to
accomplish digital recording and import new
sounds.
About COSM
Signal Flow.................................................................................12
USING THE UNIT SAFELY.......................................................13
IMPORTANT NOTES ................................................................14
Main Specifications.................................................................14
(Composite Object Sound Modeling)
Composite Object Sound Modeling—or “COSM” for
short—is BOSS/Roland’s innovative and powerful
technology that’s used to digitally recreate the sound of
classic musical instruments and effects. COSM analyzes the
many factors that make up the original sound—including
its electrical and physical characteristics—and creates a
digital model that accurately reproduces the original.
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Let’s Play!
Once you’ve finished making the connections, try playing sounds as you operate the ME-25.
Using Pedal Effects
Choosing a Sound (Memory)
You can use pedal effects to apply wah or a variety of other
pedal effects.
To assign the pedal’s function, firmly press the toe of the pedal
to toggle the PEDAL FX indicator’s status.
Switches to the previous memory.
Switches to the next memory.
Depressing and holding the pedal lets you switch memories
successively.
ꢁ
ꢁ
PEDAL FX Indicator
Depressing the two pedals at the same time activates the
tuner function.
Unlit: The pedal controls the volume.
Lit: The pedal controls the pedal effects.
What is a Memory?
A group of effect settings is called a “memory.”
The ME-25 has 60 memories.
For detailed information about pedal effects, read “PEDAL FX (Pedal
Effects)”(p. 8).
Using Super Stack
Display
The currently
This lets you get the powerful
sound of a large, stack-type
tube amp even when you're
playing with a small-size amp.
Pressing this button switches
on Super Stack and makes the
SUPER STACK indicator light up.
selected sound
(memory) and
other information
appears here.
Switching to Solo Sounds
Adjusting the Volume and Tone Quality
DRIVE Knob
This switches to sounds suited to solo performance.
Pressing this pedal switches SOLO on and makes
the pedal’s indicator light up.
This adjusts the amount of distortion of preamp distortion.
TONE Knob
This adjusts the tone quality of the preamp.
VOLUME Knob
This adjusts the volume level of the preamp.
Turn the VOLUME knob while SOLO is on to set the desired solo
volume.
* Cannot be adjusted while in Edit mode (p. 5).
The knobs will be disabled when the preamp is off. To check the on/off
status of the preamp, go to the Edit mode (p. 5).
Phrase Loop Play
Pressing this pedal for two seconds or longer enables
the Phrase Loop feature.
You can save the settings you've adjusted.
“Saving Sounds (Memory Write)”(p. 4)
“Phrase Loop Play”(p. 10)
Should you encounter unexpected results, such as no sound being produced, check the following.
Are connections to other devices correctly made?
Check the connections once more.
Is the volume turned down?
Check the volume levels on any connected amp or mixer.
Has the level been lowered with the expression pedal?
When the expression pedal is set to control volume, sounds are not output when the toe of the pedal is in the raised position.
3
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Using the Sound Library
What’s the Sound Library?
The Sound Library contains sounds in a variety of styles.
You can obtain ideal sounds with ease, simply by selecting a sound provided in the Sound Library.
Six categories are available (CLEAN, CRUNCH, DRIVE, HEAVY, LEAD, and EXTREME), with ten different variations provided for each.
For information on Sound Library sounds, read the separate “Sound Library List.”
You can download a variety of the Sound Library sounds from the BOSS website (http://www.bosscorp.co.jp/sound/ME-25/).
You can import downloaded sound libraries into the ME-25 using Librarian (p. 11).
1. Choose the category you want.
“SL” will appear in the display.
3
1
2
2. Choose the variation you want.
3. Press [EXIT].
This completes the procedure for selecting sounds from the
Sound Library.
Sounds cannot be added and saved in the Sound Library using the
ME-25 itself. Sounds that you like and want to reuse should be saved
in memory (Memory Write).
When saving the sounds in memory, placing them in the order that
you intend to use during the performance will be helpful.
Saving Sounds (Memory Write)
This saves the current effect, noise suppressor, and control settings
in a memory.
1. Press [WRITE].
The memory number shown in the display will start blinking.
2. Use the MEMORY pedals to choose the memory
number where you’d like to save the memory.
Until you perform a Memory Write operation, switching off the power
or changing memories will cause any tones you’ve created to be lost.
Carrying out a Memory Write operation causes the sound already
saved at the destination memory to be lost.
Pressing and holding a pedal lets you switch memories successively.
1,3
2
To cancel the Memory Write procedure, press [EXIT].
3. Press [WRITE] again.
The memory number will blink more rapidly, indicating that
the sound has been saved.
To copy a memory, call up the memory you want to copy, then
simply carry out a Memory Write operation. You can copy the
memory by choosing a different memory number and saving it there.
4
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Making Detailed Settings for Effects
(Edit Mode)
In Edit mode, you can make detailed settings for all the effects.
1. Hold down [EXIT] and press [WRITE].
“Ed” appears in the display and operation switches to Edit
2
mode.
2. Choose the effect whose settings you want to
1 5
3
4
make.
The indicator for the selected effect flashes.
To select PEDAL FX, firmly press down on the toe of the expression
pedal until the PEDAL FX indicator is lit.
For more information about each effect, read “Effect Guide” (p. 6).
The indicators show the states described below.
Each button press switches the state.
3. Choose the type of effect.
Example: COMP/FX
Effect adjustment
Flash
Effect off
Effect on
The number of types varies depending on the effect. For instance,
setting the COMP/FX type to 4 selects 3 (AC SIM) as the type.
4. Adjust the effect as desired.
Off
Lit
This ends Edit mode.
6. If you want to save the settings you’ve just
made, carry out the Memory Write procedure
(p. 4).
In the Edit mode, the function shown in italics is enabled.
Example: the CLEAN button
Turning off the power or switching memories before you carry out a
Memory Write operation causes the sound you've created to be lost.
This functions as a COMP/FX button.
Adjusting the Noise Suppressor
This suppresses the noise and hum picked up by the guitar’s
pickups.
2. Holding down [EXIT] and use the MEMORY
or pedals to adjust the the noise suppressor.
The current noise suppressor setting (t0–t9) appears in the
display.
1
3
A setting of t0 (zero) turns off the noise suppressor.
Adjusting the noise suppressor setting higher than necessary may
result in no sound when the guitar is played at low volume.
3. Press [EXIT (EDIT)].
2
This ends Edit mode.
4. If you want to save the setting, carry out a
Memory Write operation (p. 4).
1. Hold down [EXIT] and press [WRITE].
Turning off the power or switching memories before you carry out a
Memory Write operation causes the sound you’ve created to be lost.
“Ed” appears in the display and operation switches to Edit
mode.
5
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Making Detailed Settings for Effects (Edit Mode)
Effect Guide
All product names mentioned in this document are trademarks or registered trademarks of their respective owners.
Those companies are not affiliated with BOSS and have not licensed or authorized BOSS’s ME-25. Their marks are used solely to identify
the equipment whose sound is simulated by BOSS’s ME-25.
COMP/FX (Compressor/Effects)
This produces an effect that sustains the sound without distortion.
Explanation
This produces an effect that sustains the
sound without distortion.
1: COMP
2: T.WAH
3: AC SIM
SUSTAIN:
ATTACK:
LEVEL:
This sets the sustain for the
This sets the attack (onset) of This sets the volume level of
sound.
the effect sound.
the effect.
This produces a wah effect matched to
the intensity of your picking.
SENS:
TONE:
PEAK:
This sets the sensitivity of
This sets the tone (brightness) This sets the intensity of the
response to the input sound. of the wah.
wah sound.
This transforms the sound of your elec-
tric guitar into an acoustic guitar sound.
LOW:
HIGH:
LEVEL:
This adjusts the tone of the
This adjusts the tone of the
This sets the volume level of
low frequency range.
high frequency range.
the effect.
OD/DS (Overdrive/Distortion)
These effects add distinctive distortion or sustain.
Explanation
This is a gain booster. It works well for creating distortion
1: BOOST
DRIVE:
TONE:
LEVEL:
with a COSM preamp, or for creating punchy clean tones
This sets the intensity of This sets the brightness This sets the volume
when used alone.
This is the sound of the BOSS OD-1. It produces sweet,
mild distortion.
the distortion.
of the sound.
level for OD/DS.
2: OD-1
This models an Ibanez TS-808.
3: T-SCREAM
4: BLUES
This is a unique overdrive that faithfully reproduces the
nuances of picking.
This is a sharp distortion with rich sustain.
5: DIST
This is the sound of a vintage stack-type amp.
This is the sound of a large high-gain amp.
This is a distortion that emphasizes the midrange.
This is a distortion that cuts the midrange.
This is a distortion that is distinctively rough and heavy.
6: CLASSIC
7: MODERN
8: METAL
9: CORE
10: FUZZ
PREAMP
This models preamp response.
Explanation
This is a clean sound that is smooth and warm.
This models a Fender Twin Reverb.
1: CLEAN
2: TWIN
3: TWEED
4: VO DRIVE
5: BG LEAD
6: MS VINTAGE
7: MS MODERN
DRIVE:
TONE:
VOLUME:
This sets the amount of This sets adjusts the
This sets adjusts the
distortion of the pre-
amp.
tone quality of the pre- volume level of the pre-
amp.
This is a crunch sound of a Fender Bassman.
This is a crunch sound reminiscent of a VOX combo amp.
This is a lead sound of a Mesa/Boogie combo amp.
This is a sound reminiscent of 1970s Marshall amps.
amp.
You can set the following parameters while the [DRIVE (PREAMP)]
indicator is flashing rapidly.
By holding the [DRIVE (PREAMP)] until “Ed” on the display starts
blinking, you can make the indicator on the [DRIVE (PREAMP)] flash
rapidly.
When you press the [DRIVE (PREAMP)] again, the ME-25 returns to its
normal state.
This models the higher-gain sound of Marshall amps of
recent vintage.
This is a lead channel of a Peavey EVH5150.
This models a Mesa/Boogie Dual Rectifier.
8: 5150 DRIVE
9: R-FIER
10: ULTRA METAL
This is an original metal amp of exclusive design that pro-
duces sound having distinct contours along with bold bass
and heavy distortion.
This is ideal for all kinds of metal play, including complex
and intense riffs, heavy and thundering downtuned bass
riffs, speedy solos, and more.
BASS:
This sets the tone
MIDDLE:
This sets the tone
TREBLE:
This sets the tone
quality of the lowfre- quality of the middle- quality of the highfre-
quency range.
frequency range.
quency range.
6
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Making Detailed Settings for Effects (Edit Mode)
MODULATION
These effects broaden, modulate, and/or pitch shift the sound.
Explanation
This effect adds subtle wavering to
transform the tone into one that is
broader, thicker, and more beautiful.
1: CHORUS
2: PHASER
3: FLANGER
4: ROTARY
5: UNI-V
RATE:
DEPTH:
E.LEVEL:
This sets the speed of the effect
This sets the richness of the effect
This sets the volume
level of the effect.
This effect creates a sweeping,
phase-shifted sound.
RATE:
DEPTH:
This sets the richness of the effect
RESONANCE:
This sets the speed of the effect
This sets the intensity of
the effect.
This creates a modulation effect like
the rising and falling sound of a jet
engine.
RATE:
DEPTH:
This sets the richness of the effect
RESONANCE:
This sets the speed of the effect
This sets the intensity of
the effect.
This effect produces the sound of
rotating speakers.
RATE:
DEPTH:
This sets the richness of the effect
E.LEVEL:
This sets the speed of the effect
This sets the volume
level of the effect.
This models the Uni-Vibe, an effect
that’s part of the rock sound of the
1960s.
RATE:
DEPTH:
This sets the richness of the effect
E.LEVEL:
This sets the speed of the effect
This sets the volume
level of the effect.
This produces a retro effect through
cyclical changes in the volume level.
6: TREMOLO
7: HARMONIST
RATE:
DEPTH:
E.LEVEL:
This sets the speed of the effect
This sets the richness of the effect
This sets the volume
level of the effect.
This creates harmonies reminiscent
of twin guitars.
KEY:
HARMONY:
E.LEVEL:
This sets the musical key of the
This sets the pitch of the harmony. This sets the volume
*
Play only single notes when using
the harmonist effect
song being played.
level of the effect.
Ex.
-1 Octave
Detune
+1 Octave
This imparts thickness by adding
sound an octave lower.
8: OCTAVE
-
D.LEVEL:
E.LEVEL:
This sets the volume level of the
This sets the volume
*
Play only single notes when using
the octave effect.
direct sound.
level of the effect
DELAY
This delays the sound to produce an echo-like effect. It lets you add thickness and create complex sounds.
Explanation
This is a delay of 1 to 99 ms (milli-
seconds), which is ideal for a
doubling effect.
1: 1–99 ms
TIME:
FEEDBACK:
This sets the number of
times the delay sound
repeats.
E.LEVEL:
This sets the delay time in steps of 1 ms.
This sets the volume level of
the delay sound.
Ex.
2ms
99ms
This delay has a delay time of
100 to 990 ms (milliseconds).
2: 100–990 ms
TIME:
FEEDBACK:
E.LEVEL:
This sets the delay time in steps of 10 ms. This sets the number of
This sets the volume level of
times the delay sound
repeats.
the delay sound.
Ex.
120ms
990ms
This is a delay of 1,000 to 6,000
ms (milliseconds), which is
suited to special effects.
3: 1000–6000 ms
4: TAP
TIME:
FEEDBACK:
E.LEVEL:
This sets the delay time in steps of 100 ms. This sets the number of
This sets the volume level of
times the delay sound
repeats.
the delay sound.
Ex.
1200ms
6000ms
This allows you to use the SOLO
pedal to set the delay time (see
below).
TIME:
FEEDBACK:
This sets the number of
times the delay sound
repeats.
E.LEVEL:
This sets the beat for the delay sound.
This sets the volume level of
the delay sound.
Ex.
Applying Effects in Time with the Song Tempo (Tap Tempo)
When TAP is selected, you can set the delay’s tempo as dotted eighth notes
or quarter notes by pressing the SOLO pedal two or more times in time with
the tempo of the song.
Timing
Delay Sound
TIME setting
The SOLO pedal’s indicator flashes in time with the current tempo.
When TAP is selected as the delay type, the SOLO feature cannot be
switched on or off.
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Making Detailed Settings for Effects (Edit Mode)
REVERB
This adds lingering reverberations to the sound.
Explanation
This simulates the reverberations inside a room.
This simulates the reverberations inside a hall.
1: ROOM
2: HALL
-
-
LEVEL:
This sets the volume
level of the effect.
PEDAL FX (Pedal Effects)
This produces a variety of effects using the ME-25’s expression pedals.
For information on how to use pedal effects, read “Using Pedal Effects” (p. 3).
Explanation
This is a wah effect.
1: WAH
-
-
-
This lets you continuously vary the pitch up to one octave
higher or lower than the original sound.
2: +1 OCTAVE
3: -1 OCTAVE
*
Play only single notes when using the octave effect.
This lets you sustain sound by operating a pedal. You can
use this to hold a chord sound while playing a melody line.
4: FREEZE
Using FREEZE
1. Press the heel of the expression pedal.
2. Play the guitar, and while the sound is playing, press the toe of the expression pedal.
The sound is sustained for as long as you keep the pedal pressed.
*
You can adjust the volume of the sustained sound by changing the pedal position.
3. Pressing the heel of the expression pedal stops the sustained sound.
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Convenient Functions
Tuning the Guitar (Tuner)
4. Tune so that the desired pitch is displayed
and both tuning guide indicators light up.
Tuning Guide
Too high
Too low
Tuned
(rapid flashing)
(rapid flashing)
5. Press the MEMORY
time.
/
pedals at the same
The tuner is switched off.
Bypass Feature (BYPASS)
In Tuner mode, the sound output is the same as the input
sound, with no effects applied (bypass).
1,2
You can use the expression pedal to control the volume.
1. Press the MEMORY
time.
/
pedals at the same
The tuner is switched on.
2. If necessary, adjust the reference pitch.
You can change the reference pitch by holding down [EXIT]
and pressing the MEMORY
/
pedals.
Display
35–45
Pitch
435–445 [Hz]
The reference pitch setting is saved automatically, so there is no need
to make this setting each time you tune.
The reference pitch was set to 40 (440 Hz) when the unit was shipped
from the factory.
3. Play a single open note on the string to be
tuned.
The name of the note closest to the current pitch of the string
played appears in the display.
(
sign)
(C)
(F)
(D)
(E)
(G)
(A)
(B)
9
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Convenient Functions
Phrase Loop Play
You can record up to 38 seconds of a performance and play back
the recorded section over and over. You can also layer additional
performances with the recording as it plays back (overdubbing).
This lets you create realtime backing performances on the fly.
1. Hold down the SOLO pedal for two seconds or
longer (STANDBY).
Phrase Loop goes into recording standby and the SOLO
pedal’s indicator flashes at a fixed interval.
2. Press the SOLO pedal (REC).
2.
1. Press & hold
Recording starts as soon as you press the SOLO pedal, and the
SOLO pedal’s indicator flashes rapidly.
> 2sec
STANDBY
5.
REC
3. Press the SOLO pedal again (PLAY).
Recording ends. As soon as recording stops, repeated
playback of what you’ve recorded starts, and the SOLO pedal’s
indicator lights continuously.
5.
3.
An oscillating sound may be audible when the recording time is
extremely short.
4.
4.
OVERDUB
PLAY
4. To layer additional recordings (overdubbing),
repeat Steps 2 and 3 (OVERDUB).
SOLO Pedal
Indicator
Lit
Off
You can switch memories even during phrase loop play, which lets
you record a variety of overdubbed sounds.
5. To stop loop playback, press the SOLO pedal
twice in quick succession (STANDBY).
Loop playback/recording stops, and Phrase Loop returns to
recording standby.
Press the pedal twice within the span of one second.
When playback ends, the recorded data is deleted.
6. Hold down the SOLO pedal for 2 seconds or
longer.
This exits Phrase Loop mode.
Checking the Values of Controls
Operations such as calling up memories or Sound Library sounds
may result in discrepancies between the stored parameters and the
actual positions of the controls.
You can get the actual parameter values to appear in the display so
you can check them.
Making the Settings for
Control Operation
When you call up memories, an effect’s parameters may not reflect
the actual position of the control knobs. You can set how the
parameters behave when the control knobs are moved in this state.
Hold down [EXIT] and turn the control for the
value you want to check.
1. Hold down [EXIT] and press the MEMORY
pedal.
2. Use MEMORY
/
pedals to select the
The value of the knob appears on the display for several seconds.
method of control operation.
Display Control operation
n0
The value changes immediately as the knob is turned
(factory setting).
n1
The value changes once the knob is turned past the posi-
tion corresponding to the currently set value.
3. Press [WRITE].
The setting is stored in memory.
10
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Convenient Functions
Computer Connection Via USB
Connecting the unit to a computer enables you to manage the sounds on the ME-25 or to use a digital audio workstation (DAW) to record,
play back, and edit audio.
Installing the USB Driver
Exchanging audio data with a computer by means of USB requires the installation of a USB driver on the computer you’re using.
The program and procedure you use to install the driver differs depending on the computing setup you’re using. Before use, carefully read
“readme.htm” on the ME-25 Software DVD-ROM.
If You’re Using Windows XP/Vista/7
Before use, carefully read “Readme.htm” on the included ME-25 DVD-ROM.
Using OS
Contained location
Windows XP
Windows Vista
Windows 7
\Driver\XP\Readme.htm
\Driver\Vista\Readme.htm
\Driver\Win7\Readme.htm
If You’re Using Mac OS X
You can download the driver for Mac OS X from the BOSS website (http://www.bosscorp.co.jp/sound/ME-25/).
Before use, carefully read “Readme.htm” in the downloaded file.
About the ME-25 Librarian
You can use this to back up sounds in the ME-25 to a computer and to download sound libraries and sounds made available at the BOSS
L
Managing the tones
on the ME-25 from
the computer
You can download the ME-25 Librarian from the BOSS website (http://www.bosscorp.co.jp/sound/ME-25/).
SONAR and Other Digital Audio Workstations (DAW)
You can use the ME-25 as an audio interface to the DAW via USB.
By making use of the supplied SONAR LE (Windows software), you will be able to do the following.
Play along with a backing track or rhythm track on the included ME-25 DVD-ROM.
Digitally record a performance on the ME-25.
*
SONAR LE cannot be used with Mac OS. For details on the system requirements, please refer to “SONAR_LE_Startup_Guide_e01.pdf,” which can be found on the
included “ME-25 DVD-ROM.”
Sending and receiving
audio signals
Adjust the volume using
the software
Use your computer’s software to adjust the level of the signal input via USB (it cannot be adjusted on the ME-25 itself).
To adjust the volume of a guitar, use the expression pedal or adjust other volume related parameters.
To monitor the sound being input, first lower the volume all the way using your computer’s software. Then, gradually raise the level until you’ve
obtained the amount of volume you want.
For information on how to install SONAR LE, read “SONAR_LE_Install_Guide_e01.pdf” on the ME-25 DVD-ROM.
When the ME-25 is connected to a computer, the built-in guitar amp simulator is switched on.
The signal that is input via AUX IN is not output using USB.
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Appendices
Restoring the Factory Settings
(Factory Reset)
Adjusting the Expression
Pedal
The ME-25’s expression pedal has been set for optimal operation at
the factory. However, extended use and certain operating
environments can result in the pedal going out of adjustment.
If you encounter problems such as the expression pedal’s ON/OFF
switch not functioning or the volume pedal not fully cutting off the
sound, you can use the following procedure to readjust the pedal.
You can restore the settings in the ME-25 (memories, tuner
reference pitch, and knob response method) to the values set when
the unit was shipped from the factory.
Performing a factory reset causes all settings saved in memory to be
lost. If you want to keep the memory settings, use the ME-25 Librarian
(p. 11) to save them on a computer.
1. Hold down [EXIT] and press the MEMORY
When operating the expression pedal, be careful not to get your
fingers pinched between the movable part and the panel. In places
with small children, an adult should provide supervision and
guidance until the child is capable of following all the rules essential
for the safe operation of the unit.
pedal.
“FA” appears in the display.
2. Press [WRITE].
The Tuning Guide flashes.
1. Hold down [EXIT] and press the SOLO Pedal.
The display shows “Pd” then “Up.”
3. Press [WRITE] again.
The display flashes and the factory reset is executed.
2. Move the heel of the expression pedal all the
way down, then release the pedal and press
[WRITE].
Never turn off the power while factory reset is in progress.
The display shows “dn.”
3. Move the toe of the expression pedal all the way
down, then release the pedal and press [WRITE].
A value indicating the current stiffness (sensitivity) of the
expression pedal switch appears in the display.
If the display flashes in Steps 2 or 3, press the pedal again, and then
press [WRITE].
4. Use the MEMORY
/
pedals to adjust the
stiffness (sensitivity) of the expression pedal
toe switch.
The lower the value, the more easily the switch will respond,
even when pressed lightly.
This is set to “5” when shipped from the factory.
5. Press [WRITE].
The setting is saved in memory.
Signal Flow
EFFECT
COMP/FX
PEDAL FX
OD/DS
PREAMP
DELAY
USB
OUT
USB AUX IN
IN
INPUT
USB
PHONES
NOISE
SUPPRESSOR
VOLUME
(PEDAL)
MODULATION
REVERB
OUTPUT
*
Essentially, effects are connected in the order illustrated above. However, this order may change automatically in order to optimize the connection order
and accommodate particular settings.
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USING THE UNIT SAFELY
111: Selection
•
If used improperly, batteries
may explode or leak and
cause damage or injury. In
the interest of safety, please
read and observe the
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.
following precautions (p. 2).
1
•
Carefully follow the
installation instructions
for batteries, and make
sure you observe the
correct polarity.
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.
2
3
5
•
•
•
Avoid using new batteries together
with used ones. In addition, avoid
mixing different types of batteries.
*
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
ꢂ
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.
Remove the batteries whenever the
unit is to remain unused for an
extended period of time.
If a battery has leaked, use a soft
piece of cloth or paper towel to wipe
all remnants of the discharge from
the battery compartment. Then
install new batteries. To avoid
inflammation of the skin, make sure
that none of the battery discharge
gets onto your hands or skin.
Exercise the utmost caution so that
none of the discharge gets near your
eyes. Immediately rinse the affected
area with running water if any of the
discharge has entered the eyes.
011
•
101bThe unit and the AC adaptor
should be located so their
location or position does not
interfere with their proper
ventilation.
•
002c Do not open (or modify in any
way) the unit or its AC
adaptor.
Do not allow any objects (e.g.,
flammable material, coins,
pins); or liquids of any kind
(water, soft drinks, etc.) to
penetrate the unit.
•
......................................................................................
003
•
......................................................................................
Do not attempt to repair the
unit, or replace parts within it
(except when this manual
•
102dAlways grasp only the output
plug or the body of the AC
adaptor when plugging into,
or unplugging from, this unit
or an outlet.
6
.....................................................................................
•
012c Immediately turn the power
off, remove the AC adaptor
provides specific instructions
directing you to do so). Refer all
servicing to your retailer, the nearest
Roland Service Center, or an authorized
Roland distributor, as listed on the
“Information” page.
•
Never keep batteries together with
metallic objects such as ballpoint
pens, necklaces, hairpins, etc.
from the outlet, and request
......................................................................................
......................................................................................
servicing by your retailer, the
nearest Roland Service Center, or an
authorized Roland distributor, as listed
on the “Information” page when:
112
•
103bAt regular intervals, you
Used batteries must be
disposed of in compliance
with whatever regulations for
their safe disposal that may
be observed in the region in which you
live.
•
......................................................................................
should unplug the AC
004
•
adaptor and clean it by using
Never install the unit in any of
the following locations.
•
The AC adaptor or the power-supply
cord has been damaged; or
a dry cloth to wipe all dust
and other accumulations away from its
prongs. Also, disconnect the power
plug from the power outlet whenever
the unit is to remain unused for an
extended period of time. Any accumu-
lation of dust between the power plug
and the power outlet can result in poor
insulation and lead to fire.
•
Subject to temperature
extremes (e.g., direct
sunlight in an enclosed
vehicle, near a heating
duct, on top of heat-
generating equipment);
or are
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
•
•
If smoke or unusual odor occurs
Objects have fallen into, or liquid
has been spilled onto the unit; or
......................................................................................
•
118aShould you remove a USB
•
•
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.
connector cap, keep them in
a safe place out of children’s
reach, so there is no chance
of them being swallowed accidentally.
......................................................................................
•
......................................................................................
104
.....................................................................................
•
Try to prevent cords and
cables from becoming
•
•
•
•
•
•
013
•
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.
entangled. Also, all cords and
cables should be placed so
they are out of the reach of children.
Exposed to rain; or are
Dusty or sandy; or are
Subject to high levels of vibration
......................................................................................
106
•
Never climb on top of, nor
place heavy objects on the
unit.
and shakiness.
.....................................................................................
......................................................................................
014
•
007
•
Protect the unit from strong
impact.
(Do not drop it!)
Make sure you always have
the unit placed so it is level
and sure to remain stable.
......................................................................................
•
107dNever handle the AC adaptor
body, or its output plugs,
.....................................................................................
Never place it on stands that
could wobble, or on inclined surfaces.
015
•
with wet hands when
Do not force the unit’s
......................................................................................
plugging into, or unplugging
from, an outlet or this unit.
power-supply cord to share
an outlet with an unrea-
•
008bUse only the specified AC
......................................................................................
sonable number of other
adaptor (PSA series), and
•
devices. Be especially careful when
using extension cords—the total power
used by all devices you have connected
to the extension cord’s outlet must
never exceed the power rating (watts/
amperes) for the extension cord.
Excessive loads can cause the insulation
on the cord to heat up and eventually
melt through.
make sure the line voltage at
the installation matches the
disconnect the AC adaptor
and all cords coming from
external devices.
input voltage specified on the AC
adaptor’s body. Other AC adaptors may
use a different polarity, or be designed
for a different voltage, so their use
could result in damage, malfunction, or
electric shock.
......................................................................................
•
109bBefore cleaning the unit, turn
off the power and unplug the
AC adaptor from the outlet
(p. 2).
......................................................................................
009
•
.....................................................................................
016
•
Do not excessively twist or
bend the power cord, nor
......................................................................................
Before using the unit in a
foreign country, consult with
your retailer, the nearest
•
110bWhenever you suspect the
place heavy objects on it.
possibility of lightning in your
area, disconnect the AC
adaptor from the outlet.
Doing so can damage the
Roland Service Center, or an
authorized Roland distributor, as listed
on the “Information” page.
cord, producing severed elements and
short circuits. Damaged cords are fire
and shock hazards!
......................................................................................
.....................................................................................
......................................................................................
019
010
•
•
Batteries must never be
recharged, heated, taken
apart, or thrown into fire or
water.
This unit, either alone or in
combination with an
amplifier and 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 ringing in the ears, you
should immediately stop using the unit,
and consult an audiologist.
.....................................................................................
027
•
Never expose Battery to
excessive heat such as
sunshine, fire or the like.
......................................................................................
.....................................................................................
13
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IMPORTANT NOTES
204
*
Placement
Repairs and Data
Handling DVD-ROMs
801
Microsoft and Windows are registered
trademarks of Microsoft Corporation.
351
452
206j Windows® is known officially as: “Micro-
•
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 inter-
ference.
•
Please be aware that all data contained
in the unit’s memory may be lost when
the unit is sent for repairs. Important
data should always be backed up on a
computer, or written down on paper
(when possible). During repairs, due
care is taken to avoid the loss of data.
However, in certain cases (such as when
circuitry related to memory itself is out
of order), we regret that it may not be
possible to restore the data, and Roland
assumes no liability concerning such
loss of data.
•
Avoid touching or scratching the shiny
underside (encoded surface) of the disc.
Damaged or dirty DVD-ROM discs may
not be read properly. Keep your discs
clean using a commercially available
DVD cleaner.
*
soft® Windows® operating system.”
207
*
Apple and Macintosh are registered
trademarks of Apple Inc.
209
*
Mac OS is a trademark of Apple Inc.
•
352aThis device may interfere with radio and
220
*
Copyright
All product names mentioned in this
document are trademarks or registered
trademarks of their respective owners.
853
television reception. Do not use this
device in the vicinity of such receivers.
•
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 infringe-
ments of third-party copyrights arising
through your use of this unit.
•
352bNoise may be produced if wireless
*
*
Cakewalk is a registered trademark, and
SONAR and Cakewalk logo are trade-
marks of Cakewalk, Inc.
communications 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.
Additional Precautions
MMP (Moore Microprocessor Portfolio)
refers to a patent portfolio concerned
with microprocessor architecture, which
was developed by Technology Proper-
ties Limited (TPL). Roland has licensed
this technology from the TPL Group.
551
•
Please be aware that the contents of
memory can be irretrievably lost as a
result of a malfunction, or the improper
operation of the unit. To protect
Printing Conventions
and icons in This Manual
yourself against the risk of loosing
important data, we recommend that
you periodically save a backup copy of
important data you have stored in the
unit’s memory on a computer.
Text or numerals
enclosed in square
brackets [ ]
Indicate buttons.
[WRITE] WRITE button
•
354aDo not expose the unit to direct
sunlight, place it near devices that
radiate heat, leave it inside an enclosed
vehicle, or otherwise subject it to
temperature extremes. Excessive heat
can deform or discolor the unit.
Power Supply: Use of
Batteries
552
Indicates informa-
tion that you should
be aware of when
using the ME-25.
301
•
Unfortunately, it may be impossible to
restore the contents of data that was
stored in the unit’s memory or
computer once it has been lost. BOSS/
Roland Corporation assumes no liability
concerning such loss of data.
•
Do not connect this unit to same
electrical outlet that is being used by an
electrical appliance that is controlled by
an inverter (such as a refrigerator,
washing machine, microwave oven, or
air conditioner), or that contains a
motor. Depending on the way in which
the electrical appliance is used, power
supply noise may cause this unit to
malfunction or may produce audible
noise. If it is not practical to use a
separate electrical outlet, connect a
power supply noise filter between this
unit and the electrical outlet.
•
355bWhen 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 evapo-
rated.
Indicates supple-
mentary informa-
tion about an
operation.
553
•
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.
Indicates informa-
tion about a conve-
nient operation.
556
•
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.
Indicates a reference
page.
360
302
•
•
Depending on the material and temper-
ature of the surface on which you place
the unit, its rubber feet may discolor or
mar the surface.
The AC adaptor will begin to generate
heat after long hours of consecutive
use. This is normal, and is not a cause
for concern.
(p. **)
•
558aTo avoid disturbing your neighbors, try
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.
303aIf you’ll be using the ME-25 for an
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).
•
extended time, we recommend that
you use an AC adaptor. If you prefer to
use a battery, we recommend an
alkaline battery.
304bBatteries should always be installed or
•
559aWhen you need to transport the unit,
Maintenance
•
package it in the box (including
padding) that it came in, if possible.
Otherwise, you will need to use equiv-
alent packaging materials.
401aFor everyday cleaning wipe the unit
replaced before connecting any other
devices. This way, you can prevent
malfunction and/or damage to speakers
or other devices.
•
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.
562
306bBatteries are supplied with the unit. The
•
Some connection cables contain
resistors. Do not use cables that incor-
porate 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.
•
life of these batteries may be limited,
however, since their primary purpose
was to enable testing.
402
307
•
•
Never use benzine, thinners, alcohol or
solvents of any kind, to avoid the possi-
bility of discoloration and/or defor-
mation.
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.
Main Specifications
ME-25: Guitar Multiple Effects
Output
2k ohms
7 segments, 2 digits LED
Weight
1.9 kg, 4 lbs 4 oz (including batteries)
Impedance
AD
24-bit + AF method
Accessories
Owner’s Manual
ME-25 DVD-ROM
*
AF method (Adaptive Focus method)
This is a proprietary method from
Roland & BOSS that vastly improves
the signal-to-noise (S/N) ratio of the
A/D and D/A converters.
Conversion
Display
Sound Library/Memory List (Leaflet)
Sound Library Sticker
Power Supply DC 9 V
Dry Batteries (Alkaline: LR6 (AA) type) x 6
Roland Service (Information Sheet)
Dry Batteries (R6/LR6(AA) type) x 6
AC Adaptor (BOSS PSA series: sold sepa-
rately)
DA
Conversion
24-bit
Options
AC Adaptor: BOSS PSA series
Current Draw 150 mA
*
*
0 dBu = 0.775 Vrms
Sampling
Frequency
44.1 kHz
Expected bat- Alkaline: 9 hours
In the interest of product improvement, the specifica-
tions and/or appearance of this unit are subject to
change without prior notice.
Carbon: 3 hours
(These figures will vary depending on
the actual conditions of use.)
tery life under
continuous
use
Memory
60
Nominal
INPUT: -10 dBu
AUX IN: -18 dBu
INPUT: 1M ohm
AUX IN: 22k ohms
-10 dBu
Dimensions
300 (W) x 191 (D) x 72 (H) mm
11-13/16 (W) x 7-9/16 (D) x 2-7/8 (H)
inches
Input Level
Input
Impedance
Maximum height:
300 (W) x 191 (D) x 93 (H) mm
11-13/16 (W) x 7-9/16 (D) x 3-11/16 (H)
inches
Nominal
Output Level
14
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