NAD 745DAC1 User manual

· No audio compression
· 2.4GHz Point-to-Point Wireless - up to 40 meter range
· Digital Audio: SPDIF output (coaxial)
· True CD sound quality: 16 Bit/48kHz resolution
· 24Bit/192kHz DAC
· 3 RF channels allow multiple receivers and transmitters
· Detachable USB cable for transmitter allows option for extension
· Selected close tolerance components for low noise and distortion
®
WIRELESS USB DAC 1
User Guide
CONTENTS
1 x DAC 1 USB Transmitter
1 x USB mini to USB cable
1 x DAC 1 Receiver/D-to-A Converter
1 x Power Supply: Universal switching Adaptor
with global plugs
1 x Stereo Audio Cables
©2012 NAD ELECTRONICS INTERNATIONAL, A DIVISION OF LENBROOK INDUSTRIES LIMITED
All rights reserved. NAD and the NAD logo are trademarks of NAD Electronics International, a division of Lenbrook Industries Limited.
No part of this publication may be reproduced, stored or transmitted in any form without the written permission of NAD Electronics International.
While every effort has been made to ensure the contents are accurate at the time of publication, features and specifications may be subject to change without prior notice.
DAC1_ENG_OM_V03  05/12
INSTALLATION OF WIRELESS USB DAC 1
For DIGITAL AUDIO Connect to
AV Receiver with Digital Input
such as NAD AV Receivers,
e.g. T748, T757, T787 etc.
Set channel of DAC 1
Receiver to correspond
to the DAC 1 Transmitter
setting.
Transmitter and Receiver LED
LED Blue = Locked
LED Red = Searching
2.4GHz
Wireless
DAC 1 Transmitter Side Panel
PC or MAC with compatible USB
mini USB to USB
Set channel of DAC 1 Transmitter to correspond with DAC 1 Receiver setting.
NOT TO SCALE
Universal Switching Adaptor
Interchangeable Plugs
North American Plug European Plug UK Plug Australian Plug
DAC 1 Receiver Rear Panel
Stereo Amplifier

Computer music meets hi- sound. That’s what the DAC 1 Wireless USB Digital-to-Analogue Converter is all about. Our super
simple and fun solution lets you listen to any music stored on or streamed to your computer on your high performance NAD hi-
system. Point-to-point wireless technology means you can just plug in the two-piece DAC 1 and start enjoying computer audio
with the least amount of fuss.
> Anything your computer can do, we can
do better.
You no longer have to pick your computer over your
audio system when it comes to listening to your
favourite digital tunes, Internet radio, or cloud services
like Spotify, Pandora, Last.fm, and MOG. Spoil yourself
with better sound quality and more control over your
music choices.
> Look ma, no Wi-Fi!
You don’t need a Wi-Fi network to use the DAC 1 with
its point-to-point wireless technology, which features
the full audio bandwidth and remains uncompressed
to maintain sound quality. Simply plug the DAC 1’s
Transmitter into your computer’s USB port and it
becomes a sound card that transmits audio to your
hi- system.
> Musical Sound
To achieve the best possible sound, the Transmitter
digitally transmits the audio from your Mac or PC to the
DAC 1 Receiver, which then converts the digital signal
to analogue using premium Burr-Brown OPAmps and
24/192 DAC with selected passive components in a
proprietary circuit. There is also a coax digital output
that allows downstream digital processing.
> Quality and Affordability
Our attention to detail and use of premium parts in the
DAC 1 represents unusually good value. The DAC 1
is an easy economical option that doesn’t compromise
our incredibly musical sound and promises to boost
your enjoyment of your existing component system. The
DAC 1 brings a whole new world of musical experience
and choice to your hi- experience.
DAC 1 Wireless USB Digital-to-Analogue Converter

NAD Electronics International reserves the right to change specications or features without notice. NAD is a registered trademark of NAD
Electronics International. All rights reserved. No part of this publication may be reproduced, stored, or transmitted in any form whatsoever
without the written permission of NAD Electronics International. © 08/11 11-035 NAD Electronics International.
www.NADelectronics.com
Specications
INPUTS DAC 1
USB 2.0
OUTPUTS
Analogue 2 x RCA Jacks
Digital 1 x Coaxial RC Jack
SPECIFICATIONS
Sample Rate 48kHz/16bit
THD+N 0.05% (ref 0dBFS)
Signal to Noise >-80dB
Analogue Output Level 2V
Coax SPDIF 500mV ± 50mV
Frequency Response 20Hz to 24kHz ±0.5dB
Digital-to-Analogue Converter Burr-Brown TI PCM1781
Time Delay <18ms
RF Band 2.4GHz
Transmission Range 40m (line of sight)
DIMENSION AND WEIGHT
Unit Dimensions (W x H x D) Gross Receiver
Transmitter
135 x 35 x 70mm
5.3 x 1.38 x 2.75 inches**
73 x 35 x 15mm
2.8 x 0.6 x 1.4 inches**
Net Weight 0.38kg (0.80lb)
Shipping Weight 0.62kg (1.35lb)
DAC 1 Rx
** Non-metric measurements are approximate. NAD Electronics will not assume any liability for errors being made by retailers, custom
installers, cabinet makers, or other end users based on information contained in this document.

Federal Communication Commission Interference Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part
15
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation.
This
equipment generates, uses and can radiate radio frequency energy and, if not installed and used in
accordance
with the instructions, may cause harmful interference to radio communication. However, there is no
guarantee
that interference will not occur in a particular installation. If this equipment does cause harmful
interference
to radio and television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try ti correct the interference by one of the following measures:
Reorient
or relocate the receiving antenna
Increase
the separation between the equipment and receiver
Connect
the equipment into an outlet on a circuit different from that to which the receiver is connected
Consult
the dealer or an experienced radio/TV technician for help
The Wireless
USB DAC-1 must be installed and used in strict accordance with the manufacturer's instructions. This
device complies
with the following radio frequency and safety standards.
This device complies with Part 15
of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undesired operation.
Warning:
Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the
user's
authority to operate the equipment.
SAR
Information
This device meets government requirements for exposure to radio waves. This device is a radio transmitter and
receiver.
It is designed and manufactured not to exceed limits for exposure to radio frequency (RF) energy. These
limits are
part of comprehensive guidelines and establish permitted levels of RF energy for the population. The
guidelines were developed and confirmed by independent scientific organizations
through periodic and thorough
evaluation
of scientific studies. The limits include a substantial safety margin designed to assure the safety of all

persons, regardless
of
age and health. The exposure standard
for
device employs a
unit
of
measurement
known as
the
Specific Absorption Rate,
or
SAR.
Under
the
guidelines
for
your
device, the
SAR
limit
is
1.6
W/kg.
The highest
reported body
SAR
value
is
2464MHz
0.096W/Kg
NOTE: For body worn operation,
this
device has been tested and meets the
FCC
RF
exposure guidelines when used
with
an accessory
that
contains no metal and
that
positions
the
device a
minimum
of
5
mm
from
the
body.
Use
of
other
accessories
may
not
ensure compliance
with
FCC
RF
exposure guidelines.
The
FCC
has granted an Equipment Authorization
for
this
device
with
all reported
SAR
levels evaluated
as
in
compliance
with
the
FCC
RF
exposure guidelines.
SAR
information
on this device is on file
with
the
FCC
and can be
found
under
the
Display
Grant
section
of
http://www.fcc.gov/oet/fccid
after
searching on
FCC
ID:
XCO-HSP80D81.
Europe-R&TTE
Compliance
Statement
Hereby, Hansong(Nanjing) Technology Ltd. declares
that
this
equipment
complies
with
the
essential
requirement
and
other
relevant
provision
of
Directive
1999/5/EC
OF
THE
EUROPEAN
PARLIAMENT AND
THE
COUNCIL
of
march
9,1999
on radio
equipment
and telecommunication
terminal
Equipment and
the
mutual
recognition
of
their
conformity(R&TTE).
CE
Declaration
of
Conformity
Wireless USB DAC-1 is herewith confirmed
to
comply
with
the requirements set
out
in the Council (European
parliament)
Directive on
the
Approximation
of
the
laws
of
the
Member States relating
to
Electromagnetic
Compatibility
of
Radio and Telecom device
(1999/5/EC).
For the evaluation regarding
this
Directive,
the
following
standards were applied:
Radio Spectrum Part:
EN
300 328
Vl.
7.1
EMC
Part:
EN
301
489-1
V1.8.1,
EN
301
489-17
V2.1.1
Electrical Safety Part:
EN
60950-1: 2006
+All:
2009 +
Al:
2010 + A12:2011
RF
Safety Part:
EN
62209-2:
2010