Perreaux SILHOUETTE SXD2 User Manual

Silhouette SXD2  
USB DAC  
Owners Manual  
Perreaux Industries Limited makes no warranty for the use of its products, other  
than those expressly contained in the warranty detailed herein. The Company  
assumes no responsibility for any errors which may appear in this document,  
reserves the right to change products or specifications detailed herein at any time  
without notice, and does not make any commitment to update the information  
contained herein. No licenses to patents or other intellectual property of Perreaux  
are granted by the Company in connection with the sale of Perreaux products,  
expressly or by implication.  
mboob^ru® is a registered trademark of Perreaux Industries Ltd.  
Terms and product names in this document may be trademarks of others.  
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i
Introducing the  
Perreaux Silhouette Series  
Designed as a range of high quality, yet affordable modules; the  
‘Silhouette’ series will compliment and enhance your existing  
system.  
Drawing on our extensive knowledge gained from more than a  
quarter of a century of developing highest quality audio products,  
the ‘Silhouette’ concentrates our legendary design and build  
quality into a compact package without sacrificing performance.  
The Perreaux ‘Silhouette’ series provides performance levels  
never before seen in its class.  
SXD2 USB The Perreaux Silhouette series SXD2 is a sophisticated stand-  
DAC alone Digital to Analog Converter (DAC) module with Universal  
Serial Bus (USB) functionality. Designed to offer up-sampling  
to 192kHz with 24-bit resolution, the SXD2 is an effective way  
to improve the performance of your CD player. The SXD2  
accepts a coaxial SPDIF digital output directly from the transport  
of the CD player (digital out). Alternately, Hard Disc Drive  
(HDD), computer based, stored music files can be played-back  
using the SXD2 via the USB connection.  
The heart of the SXD2 comprises of a high-resolution 24-bit  
Texas Instruments DAC and features other devices capable of  
automatically up-sampling a 48kHz/16-bit digital signal to a  
maximum of 192kHz/24-bit.  
CD players with an onboard DAC of inferior quality can be  
enhanced by the increased resolution and automatic up-sampling  
functionality of the Perreaux SXD2. In addition, the SXD2  
features Plug & Play USB technology providing a convenient  
method of accessing your HDD stored music files.  
The Perreaux SXD2 appeals to a new generation of music lovers,  
namely those that appreciate the increased resolution that the unit  
can provide to their existing CD player based system and  
additionally enabling access to the convenience of HDD  
computer based music storage systems. With the SXD2 you can  
now enjoy the best of both worlds.  
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Key Features  
USB connectivity  
Up-sampling to 176.4kHz/192kHz  
24-bit output resolution  
Compatible with high resolution digital audio formats  
(SACD and DVD-A)  
Internal power supply featuring a custom designed, fully  
shielded toroidal transformer  
Multiple regulated supplies, including separate analog and  
digital supplies  
Optimal internal layout for increased channel separation  
and isolation of digital stages from the analog stage  
Enhanced audio design featuring highest quality PCB and  
minimal internal wiring  
Balanced current to voltage conversion in analog output  
stage  
Low output impedance  
Compact  
Stylish  
The Perreaux “Silhouette” series takes you even closer to the  
elusive goal of “The Perfect Re-Creation of a Musical  
Event”.  
From all of us at Perreaux Industries Limited, thank you for  
choosing the Perreaux Silhouette Series SXD2 USB DAC.  
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Important Safety Instructions  
Note:  
Please read all instructions carefully before attempting to  
operate your Perreaux “Silhouette” SXD2 USB DAC.  
ALWAYS switch off power to your system before attempting to  
connect or disconnect cables.  
ALWAYS disconnect your system from the mains before  
attempting to clean your unit.  
ALWAYS keep electrical equipment out of reach of children.  
ALWAYS unplug sensitive electronic equipment during  
electrical storms.  
NEVER disconnect the mains earth from the system.  
NEVER operate the SXD2 with the cover removed.  
NEVER use any liquid inside the SXD2.  
NEVER bypass any fuse.  
NEVER attempt to repair the SXD2. In the event of a problem,  
please contact your Perreaux dealer.  
NEVER expose the SXD2 to extremely high or low  
temperatures.  
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Table of Contents  
i
Introducing the Perreaux Silhouette Series .................................... 3  
Important Safety Instructions............................................................. 5  
Table of Contents .................................................................................. 6  
Unpacking and Placement .................................................................. 7  
Instant Install.......................................................................................... 8  
Front Panel Functions ........................................................................10  
Rear Panel Functions ..........................................................................11  
Special Design Philosophies..............................................................13  
Special Design Features .....................................................................15  
Care and Maintenance .......................................................................18  
Warranty Information ........................................................................19  
Extended Warranty Registration Form..........................................20  
Troubleshooting Guide......................................................................21  
Specifications........................................................................................23  
Physical Dimensions............................................................................27  
Contact Details.....................................................................................28  
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11  
12  
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1
Unpacking and Placement  
Unpacking The SXD2 is packaged for maximum protection. To open, sit the  
Procedure box upright and cut the reinforced tape at the top of the box. The  
product can now be removed.  
Pull the foam protecting end-caps off either side of the unit and  
remove the black material covering.  
The SXD2 USB DAC is now unpacked and ready for further  
installation.  
Note:  
Please retain all packaging material for future transport.  
Box 1 x SXD2 USB DAC  
Contents 1 x Product manual  
3 x Performance analysis charts  
1 x USB cable  
1 x BNC to RCA adaptor  
1 x Detachable AC power cord  
Placing Your The SXD2 should generally be placed close to your source or  
SXD2 input equipment, thus keeping interconnect cabling between the  
SXD2 and input component as short as practical. This will  
reduce the inputs susceptibility to radio frequency interference  
and the negative effects associated with long cables.  
Ventilation The SXD2 is a digital device incorporating a low power  
Requirements amplifier. Ventilation requirements are not considered an  
important factor in product placement.  
In the event that the SXD2 is to be incorporated into custom  
cabinetry, please refer to the dimensional information provided in  
the Physical Dimensions section of the manual (Chapter 12).  
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2
Instant Install  
If you are like us, the first thing you will want to do is to play  
your favourite piece of music through your new SXD2. The  
following instructions are written to enable you to achieve this as  
quickly as possible. These are not comprehensive instructions,  
but are designed to enable you to play music now!  
Note:  
Please take the time to read the SXD2 manual thoroughly  
as it incorporates many features, which will enhance its  
operation.  
Placement  
The SXD2 is a sensitive digital device with a low power  
amplifier and best results will be achieved when placed away  
from potential interference from other components and electrical  
devices, for example AC mains cords/outlets, transformers, high  
power amplifiers, etc.  
Place the SXD2 close or near the source or input component in  
order to make as short a connection as possible.  
Turn off associated components  
This minimises the potential to damage any other components  
when connecting your SXD2 into the system. It is OK to leave  
your computer running, although make sure your application  
software is not open.  
Switch on SXD2  
Insert the power cord supplied into the rear of the SXD2 and into  
the wall. Switch on the socket at the wall and turn on the power  
of the SXD2 by setting the power switch down.  
Caution!  
Prior to connecting the AC mains, please check the voltage  
label on the rear panel to ensure that your unit conforms to  
the power supply in your area. Never attempt to connect  
the unit to the incorrect voltage.  
Select USB input on SXD2  
Set the toggle switch at the rear of the SXD2 to select the USB  
input. Refer to Chapter 4 for Rear Panel information.  
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Connect computer to SXD2 via USB  
Connect the USB output from your computer to the USB input at  
the rear of the SXD2 (the computer will automatically detect and  
install the necessary drivers). Refer to Chapter 4 for Rear Panel  
information.  
Connect SXD2 output to preamplifier  
Connect the outputs of the SXD2 to the unbalanced input of your  
preamplifier, integrated amplifier or powered speakers. Refer to  
Chapter 4 for Rear Panel information.  
Play your favourite playlist  
Open your preferred application software (eg. iTunes, WinAmp,  
Windows Media Player, etc.) and play your favourite playlist.  
Switch on preamplifier  
Turn on your preamplifier and power amplifier or integrated  
amplifier. Slowly increase the volume to achieve a comfortable  
listening level.  
CONGRATULATIONS!  
Now that you have achieved your first objective, sit back, relax  
and please read the rest of the manual at your own pace, in your  
favourite armchair, whilst sipping a hot cup of coffee. You’ll  
find the whole experience much more pleasurable whilst  
listening to music.  
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3
Front Panel Functions  
Power LED  
This blue LED indicates the power status of your SXD2 USB  
DAC.  
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4
Rear Panel Functions  
Analog Outputs  
These single-ended (RCA) outputs provide line-level analog  
audio, via suitable RCA interconnect cables, to a preamplifier or  
integrated amplifier.  
For more information on output specifications, please refer to  
Chapter 11.  
Digital Input  
The single-ended (BNC) input accepts a Sony/Philips Digital  
Interface Standard (SPDIF) digital audio signal from a source  
component (e.g. Perreaux SXCD CD player, Apple AirPort  
Express, Sony PlayStation).  
The SPDIF standard dictates 75Ω transmission of the digital  
audio signal. Use a digital interconnect cable specifically  
designed with a characteristic impedance of 75Ω.  
A BNC connector has been used in place of the “standard” RCA  
type, because design limitations mean RCA connectors can never  
achieve a characteristic impedance of 75Ω. Refer to Chapter 6  
‘Special Design Features’ for more information on why a BNC  
connector is used.  
If you already have a suitable high-quality digital interconnect  
equipped with RCA connectors, please use the supplied adaptor  
to convert the BNC output to RCA.  
For more information on input specifications, please refer to  
Chapter 11.  
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Note:  
Use a 75Ω digital interconnect cable equipped with BNC  
connectors to get the best possible digital performance.  
Using the supplied adaptor to convert the BNC output to  
RCA will not degrade the signal any more than if an RCA  
connector was fitted by default.  
Universal Serial Bus (USB) Input  
USB input from computer, accepts a standard Type B USB  
connector. For more information on input specifications, please  
refer to Chapter 11.  
Input Selector Switch  
Selects between the coaxial digital input and USB input.  
Serial Number/Voltage Label  
The serial number is unique to your SXD2. Please record this  
number and store it in a safe place. For any service related  
enquiry, please be prepared to quote the product serial number to  
Perreaux personnel or their authorised service representative.  
The voltage displayed in this area is the ONLY voltage  
that can be accepted by the unit.  
Caution!  
Never attempt to connect the unit to the incorrect voltage.  
AC Mains Input  
An IEC-standard mains input is provided at the rear of the unit.  
The AC cord set is removable, allowing it to be upgraded at your  
will.  
On/Off Switch  
When operating the switch down, power is applied to the SXD2.  
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5
Special Design Philosophies  
Perreaux has been designing and manufacturing only the highest  
quality audio componentry for more than a quarter of a century.  
Technology has continued to evolve rapidly over that time and  
our knowledge and application of design, materials and  
manufacturing techniques has advanced in tandem with this.  
Today’s Perreaux range comes closer to fulfilling our shared  
vision than at any other time in the past.  
The SXD2 has been developed to meet customer demands for  
compact higher quality products. Careful attention has been  
taken throughout the development phase, not to make  
compromises that would degrade the high quality of reproduction  
that the unit is capable of delivering.  
To follow is a discussion on some of Perreaux design  
philosophies that have been incorporated into the entire range.  
Minimalist Leading British architect, John Pawson, writes:  
Design  
The Minimum can be defined as the perfection  
that an object achieves when it is no longer  
possible to improve it by subtraction. This is the  
quality that an object has when every component,  
every detail, and every junction has been reduced  
or condensed to the essentials. It is the result of  
the omission of the inessentials”.  
Perreaux has historically embraced the minimalist ethic from an  
audio design perspective only. The concept of “less equating to  
more” has been at the heart of all Perreaux audio designs for  
more than a quarter of a century. Our current product offering  
takes the minimalist ethic to new levels by totally embracing the  
concept.  
Minimalist Electronics  
We wish to maximise the quality of your listening pleasure by  
keeping the componentry and signal path as uncluttered, short  
and clean possible. All components in the signal path, even those  
of the highest quality have an effect on the signal, thereby  
altering the quality of the reproduction in some way. Our aim is  
to recreate in its entirety, the original performance by not adding  
or subtracting anything, irrespective of the source.  
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Minimalist Aesthetics  
Our products appeal to those who seek the ultimate in audio  
exclusivity, namely the perfect blend of “form and function”.  
“Form and function” are both tough masters. We make no  
excuses for producing some of the most distinctive high-end  
audio products on the planet. We let “form and function” blend  
together in perfect harmony. This surely is the essence of true  
minimalist utilisation.  
Minimalism in a Wider Context  
John Pawson writes:  
Clearly simplicity has dimensions to it that go  
beyond the purely aesthetic: it can be seen as the  
reflection of some innate, inner quality, or the  
pursuit of philosophical or literary insight into the  
nature of harmony, reason, and truth”.  
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Special Design Features  
Construction The beautifully styled curving front panel is milled from solid  
6.0mm (0.2”) thick aluminium extrusion and finished in a satin  
chrome electroplate.  
The front panel also features the  
mboob^ru® logo machined into the solid aluminium. The  
chassis and cover are both manufactured from heavy gauge steel.  
No cover fixing screws are visible. The “Silhouette” SXD2 is  
stylish yet functional and exhibits typical hallmarks of the  
Perreaux brand.  
Circuit  
Topology  
The Power The SXD2 has an internal power supply. These designs are  
Supply invariably more sophisticated than those featuring external plug-  
in power packs. Special attention must be paid to shielding,  
transformer design, capacitance and earthing.  
Separate We have specially developed  
a
fully shielded, toroidal  
Analog and transformer with three separate secondary windings. Five  
Digital regulated power supplies are employed, three analog and two  
Supplies digital. This ensures the analog circuitry has maximum isolation  
from any digital power supply artefacts and noise.  
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Block  
Diagram  
USB The SXD2 is fully compliant with USB 1.1 specification and  
Connectivity utilises ‘Full Speed’ (12Mbps) transceivers. The bandwidth  
offered by ‘Full Speed’ USB is more than sufficient to stream  
digital audio.  
Plug and Play Designed to bypass the inherently flawed soundcards internal to  
computers, the SXD2 offers plug and play convenience when  
connected via the USB port.  
BNC Digital RCA connectors are inherently disadvantaged for use with the  
Input high frequency (1.4MHz-2.8MHz) signals associated with  
Connector 44.1kHz/16-bit digital audio. Design limitations mean RCA  
connectors can never achieve a characteristic impedance of 75Ω,  
resulting in reflections and signal loss due to impedance  
mismatch. In contrast, BNC connectors are purposely designed  
to carry high frequency signals, up to 2GHz for 75Ω – therefore  
overcome the problems exhibited by RCA connectors.  
Up-Sampling The SXD2 automatically up-samples the digital signal 4x the  
input sample frequency, up to a maximum of 192kHz. For  
example, if the digital input is 44.1kHz (CD), the SXD2 will up-  
sample to 176.4kHz (4x 44.1kHz).  
Rather than offer constant up-sampling to 192kHz, we have  
purposely decided to use a multiple of the input frequency (4x).  
This guarantees that every 4th sample will be true. Using  
44.1kHz sample frequency as an example, if it were up-sampled  
to 192kHz, then only every 640th sample would be true to the  
original 44.1kHz signal.  
24-bit Red Book Audio CDs have a sampling rate of 44.1kHz and 16-  
Resolution bit resolution. This results in a maximum possible Signal-to-  
Noise Ratio (SNR) of around 96dB. Increasing the resolution to  
24-bit not only reduces quantization error in signal amplitude,  
but also increases the maximum possible SNR to around 144dB.  
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High Accepting PCM digital streams up to 192kHz and 24-bit, via the  
Resolution coaxial SPDIF input, allows the SXD2 to be compatible with  
Formats high-resolution formats such as DVD-A.  
PCB Layout Special attention has been paid to the PCB layout to ensure  
maximum isolation between the analog and digital stages.  
Ground planes and earth returns have been meticulously  
designed to provide optimal current paths, so as not to interfere  
with the delicate analog section. Careful layout of the analog  
output guarantees that crosstalk is kept to an absolute minimum.  
Localised All integrated circuits (ICs), both analog and digital, have  
Supply localised inductor-based supply filtering. Even though voltage  
Filtering regulators are used for all supply rails, they can be susceptible to  
picking up noise on their way to the ICs, especially with high  
frequency clocking and data lines present. By filtering locally,  
we are making absolutely certain that every last ounce of noise is  
removed from the supply rails.  
Localised filtering, along with meticulous PCB layout, paves the  
way for the SXD2 to utilise the higher signal-to-noise ratio  
(SNR) performance offered by 24-bit resolution.  
Balanced I-V Balanced current to voltage conversion is utilised in the audio  
Conversion  
output stage. This ensures that any common-mode noise and  
artefacts are removed before amplification and the analog filter.  
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7
Care and Maintenance  
Note:  
Please switch the unit off and remove the cord set from the  
rear of the USB DAC before attempting to clean your SXD2  
in the manner described below.  
Never apply liquid directly to the SXD2.  
Never use abrasives.  
Never rub in a circular motion.  
Cover  
The cover features a durable high quality powder coat finish. To  
remove finger marks and dirt, lightly rub the surface with a soft  
cloth.  
If the dirt is not removed, dip your cloth in a mild solution of  
soap and water, squeeze excess moisture from it and then gently  
reapply to the surface.  
Stubborn dirt may be removed by the application of a small  
quantity of isopropyl alcohol, applied directly to the cleaning  
cloth only, and reworking the effected area.  
Front Panel The SXD2 front panel features a high quality electroplate finish.  
Over time the surface may retain finger marks and may need to  
be cleaned to restore it to original condition.  
Regular Cleaning  
Gently wipe the front panel with a very clean cotton cloth. Wipe  
across the surface and never in a circular motion.  
Removing Stubborn Marks  
Only attempt this infrequently, as too regular or vigorous  
application may damage the surface.  
Apply a small quantity of any car polish containing carnauba  
wax to a very clean cotton cloth.  
Note:  
The car polish must state “Safe for Clear Coats” as the polish  
will therefore contain the absolute minimum amount of  
abrasive compound.  
Gently wipe over the front panel in lateral motion, allow to dry  
then gently wipe off with a very clean cotton cloth.  
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8
Warranty Information  
1 Year The Perreaux SXD2 is warranted free from defects in material  
Limited and workmanship under normal use for a period of 1-year (365  
Warranty days) from the date of purchase.  
To extend the warranty of the Perreaux SXD2 to three (3) years  
from date of purchase, please return a fully completed warranty  
registration form along with a copy of the original receipt of  
purchase to:  
Perreaux Industries Ltd  
PO Box 305  
Mosgiel  
Dunedin 9053  
New Zealand  
For the Extended Warranty Registration Form, please refer to  
Chapter 9.  
3 Year The extended warranty for the Perreaux SXD2 is three (3) years  
Extended from the date of purchase. If during the warranty period the  
Warranty SXD2 exhibits defects in materials and/or workmanship, it will  
be repaired or replaced, at our option, without charge for either  
parts or labour, at our factory in New Zealand. The warranty  
does not apply to any unit that has been misused, abused or  
altered.  
Any unit that is not performing satisfactorily may be returned to  
the factory in New Zealand for evaluation. Return authorisation  
must first be obtained by either calling or writing to Perreaux  
prior to shipping the unit. Perreaux Industries Ltd and its  
authorised distributors and dealers shall not be held liable for any  
freight or insurance charges. Freight and insurance charges to  
and from the Perreaux factory will be the sole responsibility of  
the owner of the unit.  
There is no other express warranty on the SXD2. Neither this  
warranty nor any other warranty, express or implied, including  
any implied warranties of merchantability of fitness, shall extend  
beyond the warranty period. No responsibility is assumed for  
any incidental or consequential damages.  
Obtaining In the event that you are experiencing difficulty with your SXD2,  
Service please as a first step consult the troubleshooting guide in Chapter  
10. For further assistance, please contact your Perreaux dealer.  
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9
Extended Warranty  
Registration Form  
Please complete this form and either fax, mail or e-mail it, along  
with a copy of the original receipt, to Perreaux Industries Ltd.  
Fax:  
+64 3 489 2976  
Mail:  
Perreaux Industries Ltd  
PO Box 305  
Mosgiel  
Dunedin 9053  
New Zealand  
Alternatively, complete the online Warranty Registration Form  
3 Year Extended  
Warranty Form  
Name:  
Address:  
Suburb:  
City:  
Country:  
Telephone:  
E-mail:  
Website:  
Product:  
S I L H O U E T T E   S X D 2                    
Serial No:  
Dealer:  
Purchase Date:  
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10  
Troubleshooting Guide  
Please use this guide if you are experiencing any problems with  
the SXD2 in your system. It will provide possible solutions for  
some given symptoms.  
There is no SXD2 not turned on  
output from Make sure the SXD2 power switch is in the DOWN position.  
my system  
AC cord not plugged in  
Check that the AC cord is plugged into the IEC socket on the rear  
of the SXD2.  
Mains power not turned on  
Check if the power is turn on at the mains socket on the wall.  
Interconnect cables not connected  
Make sure that the interconnect cables are plugged in and  
connected to the respective sockets at the rear of the SXD2.  
USB cable not connected  
Confirm that the USB cable is plugged into both the computer  
and the SXD2.  
USB/SPDIF switch on wrong setting  
Select the correct input mode (USB or SPDIF) using the toggle  
switch on the rear of the SXD2.  
Source not set to play  
Ensure that your source component is playing the recording you  
would like to listen to, and that pause is not pressed.  
Application software not properly configured  
Make sure that the application software (eg. Winamp, iTunes)  
has been properly configured to use USB audio as its audio  
output device.  
No volume setting  
Make sure that the volume on your preamplifier is set to a  
suitable level.  
SXD2 connected to incorrect input  
Confirm that the output of your SXD2 is connected to the  
appropriate source input on your preamplifier.  
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I can hear a Input and/or output sockets corroded  
hum coming Check that the input and output sockets on the rear of the SXD2  
from my are free from corrosion.  
speakers  
Interconnect cables damaged  
Make sure that the integrity of your interconnect cables is sound  
and they are firmly connected to your preamplifier and the  
SXD2.  
SXD2 is close to external interference  
Check the proximity of your SXD2 to any possible source of  
EMI and/or RF interference, for example computers, televisions,  
amplifiers, speakers, etc.  
Earth loop in system  
If your preamplifier and/or amplifier have an earth/ground lift  
switch, toggle it and check which setting sounds better.  
Windows Windows 98SE doesn’t have USB audio system files  
98SE keeps These files are not a part of the Windows 98SE core installation,  
prompting they need to be added. The necessary files are on the Windows  
for CD-ROM 98SE CD-ROM.  
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11  
Specifications  
The correlation between published specifications and sonic  
quality can be unreliable. A list of numbers reveals virtually  
nothing. All technical measurements must be subject to  
qualitative as well as quantitative interpretation. Measurements  
of the SXD2 reveal excellent results by any standards. Tested at  
115V and 230V after a 10 minute warm up period.  
Specifications Digital Input  
in Brief Number of Digital Inputs: ....................................... 2 (Coaxial, USB)  
Number of Audio Channels: ........................................................2  
Sample Frequency Range  
Coaxial:...............................................................32kHz–192kHz  
USB: .....................................................................32kHz–48kHz  
Maximum Word Length  
Coaxial:............................................................................. 24 bits  
USB: ................................................................................. 16 bits  
Digital Input Impedance (Coaxial): ...........................................75  
Minimum Digital Input Level (Coaxial):...........................220mVp-p  
Over-Voltage Protection: .........................................................Yes  
DC Blocking Capacitor:...........................................................Yes  
Jitter Tolerance  
100Hz to 5kHz:.................................... 12.75UI (2.26us @ 44.1kHz)  
5kHz to 10kHz:.....................................3.50UI (620.0ns @ 44.1kHz)  
10kHz to 20kHz:...................................2.35UI (416.3ns @ 44.1kHz)  
Analog Output  
Analog Output Level:........................................................1.6VRMS  
Output Impedance:................................................................100Ω  
Total Harmonic Distortion (THD+N)  
Typically:............................................................0.01%, @ 1kHz  
20Hz to 20kHz:............................................................... <0.20%  
Frequency Response at Fs=44.1kHz  
20Hz to 20kHz:.............................................................. ±0.10dB  
10Hz: ..............................................................................-0.01dB  
20kHz: ............................................................................-0.10dB  
Frequency Response at Fs=96kHz  
20Hz to 20kHz:.............................................................. ±0.10dB  
10Hz: ..............................................................................-0.01dB  
20kHz: ............................................................................-0.10dB  
40kHz: ............................................................................-0.70dB  
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Signal to Noise Ratio  
A-Weighted: ..................................................................... 113dB  
Unweighted:...................................................................... 110dB  
Crosstalk  
20Hz: ...............................................................................-113dB  
1kHz: ...............................................................................-110dB  
20kHz: .............................................................................-108dB  
Audio Connections  
Digital Inputs ...............................................1 Coaxial PCM (BNC)  
.............................................................................. 1 USB (Type B)  
Analog Outputs .........................................1 pair unbalanced (RCA)  
Compatible Operating Systems  
Windows: ..................................................XP, 2000, 98SE, 98ME  
Mac: .............................................................OS 9.1+, OS X 10.0+  
Other Connections  
IEC AC mains input receptacle  
Mains Input Voltage  
115V or 230V AC at 50Hz/60Hz  
(Set within the SXD2 at time of manufacture)  
Internal Mains Fuse Rating  
1 x 2SB 500mA slow blow  
(NOT user serviceable)  
Overall Dimensions  
Width........................................................................216mm (8.5”)  
Depth........................................................................169mm (6.7”)  
Height........................................................................ 58mm (2.3”)  
Weight  
Gross ..........................................................................2.1kg (4.6lb)  
Net............................................................................. 1.5kg (3.3lb)  
Digital Input Sample Frequency Range ................................32kHz to 192kHz  
Specifications This is the range of digital input sample frequencies the SXD2 is  
Explained capable of detecting and processing. The Red Book compact  
disc standard is 44.1kHz and the high resolution DVD-A format  
is 192kHz.  
24  
Maximum Word Length .......................................................24 bits  
The maximum length of the digital input data word that the  
SXD2 can process. The Red Book compact disc standard is 16  
bits, where as high resolution DVD-A is 24 bits.  
Digital Input Impedance........................................................... 75Ω  
This is the industry standard termination impedance for digital  
connectors. This ensures an ideal match is maintained with  
source components.  
Minimum Digital Input Level..........................................220mVp-p  
This is the minimum peak-to-peak voltage of the digital input  
signal required for the SXD2 to function correctly.  
Over-Voltage Protection............................................................. Yes  
This protects the sensitive digital input circuitry from being  
damaged by input voltages which are too high.  
DC Blocking Capacitor ................................................................ Yes  
The DC blocking capacitor stops any prolonged DC voltage from  
damaging the SXD2 digital input circuitry.  
Jitter Tolerance (100Hz-5kHz)................................................12.75UI  
This indicates the maximum possible jitter present on the digital  
input without affecting the performance of the SXD2. 12.75UI  
equals 2.26µs at a 44.1kHz sample rate.  
Analog Analog Output Level........................................................... 1.6VRMS  
Output This is the analog output voltage of the SXD2, with a 0dBFS  
Specifications digital input signal, and is fixed at 1.6VRMS  
.
Explained  
Output Impedance...................................................................100Ω  
This indicates the ability of the SXD2 to deliver current to the  
component connected to the output. Keeping this value low  
means the SXD2 will not be affected by resistive and capacitive  
loading, due to interconnects and/or the input impedance of the  
connected component.  
THD+N....................................................................... 0.01%, @ 1kHz  
Total Harmonic Distortion + Noise is the percentage of output  
signal which is made up of frequencies added due to harmonics  
of the fundamental frequency and noise.  
25  
Frequency Response.............................. 20Hz to 20kHz, ±0.1dB  
This describes how the SXD2’s output level responds to  
frequency. Indicating that the SXD2 responds to all frequencies  
from 20Hz to 20kHz with no more than 0.1dB deviation in the  
amplitude or strength of the output signal. This also gives you an  
idea of the bandwidth of the SXD2.  
Signal to Noise Ratio (A-Weighted)........................................113dB  
The ratio of desired signal to noise signals present in the output.  
It is important in line-level components to design the circuit to  
keep this value at a maximum. Line-level components typically  
occur early in the signal chain; hence any noise introduced will  
be amplified. This is why Perreaux engineers have designed the  
SXD2 to maintain a low noise floor.  
Crosstalk....................................................................................-113dB  
This is the level of undesired capacitive, inductive, or conductive  
coupling from one channel to the other. Meticulous PCB and  
ground plane design has ensured that crosstalk is very low.  
26  
12  
Physical Dimensions  
27  
13  
Contact Details  
For more information please contact your Perreaux dealer, or  
contact:  
Perreaux Industries Ltd  
PO Box 305  
Mosgiel  
Dunedin 9053  
New Zealand  
Ph:  
Fax:  
+64 3 489 2975  
+64 3 489 2976  
28  
Installation Notes  
29  

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