Perreaux SXD2 User Manual

Silhouette SX

D2

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.

1

This page has intentionally been left blank.

2

iiii 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

DAC

The Perreaux Silhouette series SXD2 is a sophisticated stand­alone 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.

3

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.

4

ii

ii Important Safety Instructions

iiii

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.

5

iii

iii Table of Contents

iiiiii

iiii
ii

ii

iiii
iii

iii

iiiiii
1111
2222
3333
4444
5555
6666
7777
8888
9999
10

10

1010
11

11

1111
12

12

1212
13

13

1313

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

6

1111 Unpacking and Placement

Unpacking

Procedure

Note:

Box

Contents

Placing Your

SXD2

Ventilation

Requirements

The SXD2 is packaged for maximum protection. To open, sit the
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.

Please retain all packaging material for future transport.

1 x SXD2 USB DAC
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

The SXD2 should generally be placed close to your source or
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.

The SXD2 is a digital device incorporating a low power
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).

7

2222 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:

Caution!

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.

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.

8

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.

9

3333 Front Panel Functions

Power LED

This blue LED indicates the power status of your SXD2 USB
DAC.

10

4444 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.

11

Note:

Caution!

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

ONLY voltage

ONLYONLY

that can be accepted by the unit.

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.

12

5555 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

Design

Leading British architect, John Pawson, writes:

“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.

13

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”.

14

6666 Special Design Features

Construction

Circuit

Topology

The Power

Supply

Separate

Analog and

Digital

Supplies

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.

The SXD2 has an internal power supply. These designs are
invariably more sophisticated than those featuring external plug­in power packs. Special attention must be paid to shielding,
transformer design, capacitance and earthing.

We have specially developed a fully shielded, toroidal
transformer with three separate secondary windings. Five
regulated power supplies are employed, three analog and two
digital. This ensures the analog circuitry has maximum isolation
from any digital power supply artefacts and noise.

15

Block

Diagram

USB

Connectivity

Plug and Play

BNC Digital

Input

Connector

Up-Sampling

24-bit

Resolution

The SXD2 is fully compliant with USB 1.1 specification and
utilises ‘Full Speed’ (12Mbps) transceivers. The bandwidth
offered by ‘Full Speed’ USB is more than sufficient to stream
digital audio.

Designed to bypass the inherently flawed soundcards internal to
computers, the SXD2 offers plug and play convenience when
connected via the USB port.

RCA connectors are inherently disadvantaged for use with the
high frequency (1.4MHz-2.8MHz) signals associated with

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.

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 up­sample 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 4

44.1kHz sample frequency as an example, if it were up-sampled
to 192kHz, then only every 640

th

sample will be true. Using

th

sample would be true to the

original 44.1kHz signal.

Red Book Audio CDs have a sampling rate of 44.1kHz and 16­bit resolution. This results in a maximum possible Signal-to­Noise 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.

16

High

Resolution

Formats

PCB Layout

Localised

Supply

Filtering

Balanced I-V

Conversion

Accepting PCM digital streams up to 192kHz and 24-bit, via the
coaxial SPDIF input, allows the SXD2 to be compatible with
high-resolution formats such as DVD-A.

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.

All integrated circuits (ICs), both analog and digital, have
localised inductor-based supply filtering. Even though voltage
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 current to voltage conversion is utilised in the audio
output stage. This ensures that any common-mode noise and
artefacts are removed before amplification and the analog filter.

17

7777 Care and Maintenance

Note:

Cover

Front Panel

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.

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.

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:

18

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.

8888 Warranty Information

1 Year

Limited

Warranty

3 Year
Extended
Warranty

Obtaining

Service

The Perreaux SXD2 is warranted free from defects in material
and workmanship under normal use for a period of 1-year (365
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.

The extended warranty for the Perreaux SXD2 is three (3) years
from the date of purchase. If during the warranty period the
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.

In the event that you are experiencing difficulty with your SXD2,
please as a first step consult the troubleshooting guide in Chapter

10. For further assistance, please contact your Perreaux dealer.

19

E S X D 2

9999 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: [phone]

Mail: Perreaux Industries Ltd
PO Box 305
Mosgiel
Dunedin 9053
New Zealand

E-mail: [e-mail]

Alternatively, complete the online Warranty Registration Form
on our website – www.perreaux.com.



3 Year Extended
Warranty Form

Name:

Address:

Suburb:

City:

Country:

Telephone:

E-mail:

Website:

Product:

S I L H O U E T T

Serial No:

Dealer:

Purchase Date:

20

d d m m y y y y

/

/

10

10 Troubleshooting Guide

1010

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

output from

my system

SXD2 not turned on

Make sure the SXD2 power switch is in the DOWN position.

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.

21

I can hear a

hum coming

from my

speakers

Input and/or output sockets corroded

Check that the input and output sockets on the rear of the SXD2
are free from corrosion.

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

98SE keeps

prompting

for CD-ROM

Windows 98SE doesn’t have USB audio system files

These files are not a part of the Windows 98SE core installation,
they need to be added. The necessary files are on the Windows
98SE CD-ROM.

22

11

11 Specifications

1111

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

in Brief

Digital Input

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)

Minimum Digital Input Level

: ........................................... 75Ω

(Coaxial)

:...........................220mV

p-p

Over-Voltage Protection: .........................................................Yes

DC Blocking Capacitor: ........................................................... Yes

Jitter Tolerance

100Hz to 5kHz:.................................... 12.75UI

5kHz to 10kHz:..................................... 3.50UI

10kHz to 20kHz:................................... 2.35UI

(2.26us @ 44.1kHz)

(620.0ns @ 44.1kHz)

(416.3ns @ 44.1kHz)

Analog Output

Analog Output Level:........................................................1.6V

RMS

Output Impedance: ................................................................ 100Ω

Total Harmonic Distortion

(THD+N)

Typically:............................................................0.01%, @ 1kHz

20Hz to 20kHz:............................................................... <0.20%

Frequency Response at F

=44.1kHz

s

20Hz to 20kHz:.............................................................. ±0.10dB

10Hz: .............................................................................. -0.01dB

20kHz: ............................................................................ -0.10dB

Frequency Response at F

=96kHz

s

20Hz to 20kHz:.............................................................. ±0.10dB

10Hz: .............................................................................. -0.01dB

20kHz: ............................................................................ -0.10dB

40kHz: ............................................................................ -0.70dB

23

Signal to Noise Ratio

A-Weighted: ..................................................................... 113dB

Unweighted:...................................................................... 110dB

Crosstalk

20Hz: ............................................................................... -113dB

1kHz: ............................................................................... -110dB

20kHz: ............................................................................. -108dB

Audio Connections

Digital Inputs ............................................... 1 Coaxial PCM

.............................................................................. 1 USB

Analog Outputs .........................................1 pair unbalanced

(BNC)

(Type B)

(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

Specifications

Explained

Sample Frequency Range ................................32kHz to 192kHz

This is the range of digital input sample frequencies the SXD2 is
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 ..........................................220mV

p-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
Output

Specifications

Explained

Analog Output Level ........................................................... 1.6V

RMS

This is the analog output voltage of the SXD2, with a 0dBFS
digital input signal, and is fixed at 1.6V

RMS

.

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.

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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-W

eighted

)

........................................ 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.

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12

12 Physical Dimensions

1212

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13

13 Contact Details

1313

For more information please contact your Perreaux dealer, or
contact:

Perreaux Industries Ltd
PO Box 305
Mosgiel
Dunedin 9053
New Zealand

Ph: [phone]
Fax: [phone]

E-mail: [e-mail]

Internet: www.perreaux.com

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Installation Notes

29