Selling my Audio Research DAC 8. It is in perfect condition. I have all original packing, remote, manual and driver CD. Domestic buyers only.
Here is Audio Research's description of the DAC 8:
We are pleased to introduce the new DAC8 digital to analog converter.
Although physically similar to its predecessor, the DAC8 represents new
engineering that advances the state of the art in high resolution USB
audio and S/PDIF audio.
Audio Research has maximized the USB capability of the DAC8 by incorporating
USB 2.0 HS (High Speed) which runs at 480Mbps. USB 2.0 HS has a lower
jitter specification than USB 2.0 FS (Full Speed 12mbps), consequently
the DAC8 is capable of reproducing music at higher definition/resolution
(up to 24/192) than products communicating at USB 2.0 FS speeds (24/96).
In addition, the DAC8 employs a low jitter Dual Master Oscillator design
that will provide superior digital to analog conversion via its USB 2.0
HS input as well as via the more traditional S/PDIF (RCA, BNC, Toslink
and AES/EBU) inputs that are also included on the DAC8. Our USB 2.0 HS
audio interface is optimized for all six sample- rates currently in popular
use; 44.1, 48, 88.2, 96, 176.4 and 192kHz.
In the past, S/PDIF was the default interface mode for High Resolution
music files at 176.4 and 192kHz. Now, with Audio Research’s Dual
Master Oscillator, USB 2.0 HS interface, and our Quad D/A converter design,
USB audio is finally elevated to the status once dominated by S/PDIF.
Consequently, regardless of whichever digital input you select, the Audio
Research DAC8 promises to provide a superior listening experience.
In addition to the High Performance USB design, the DAC8 features:
- "DAC8 HD Audio Device" software drivers, which allow listening
to your music in its native sample rate as well as assuring BIT PERFECT,
low jitter, data transfer from the computer to your DAC8. Because PC
and Mac operating systems do not adequately support sample rates over
96kHz, Audio Research has developed ASIO drivers to make the USB audio
experience sonically transparent at all sample rates.
- Sample Rate measuring function: Measures and displays the correct
digital sample rate being sent to the DAC8. This works in USB as well
as S/PDIF mode. Consequently, at a glance, you always know exactly which
sample rate is being decoded.
- The DAC8 employs four 24-bit D/A converters. Each channel uses dual
24-bit D/A converters running in mono mode to lower the noise floor
and increase the dynamic range.
- Dual Master Oscillators: When the time base of any DAC is not an integer
multiple of the digital music sample rate, decoding and quantization
errors occur. Consequently, the DAC8 uses two low jitter Master Oscillators;
one for 44.1, 88.2 & 176.4kHz sample rates and the other for 48,
96 & 192 kHz sample rates. The DAC8 automatically selects the correct
Master Oscillator the instant digital music is detected at the selected
- All inputs are galvanically isolated from the source to reduce or
eliminate noise and/or jitter from entering the DAC8.
- The Analog amplifiers in the DAC8 have received the same attention
to detail as the digital section. Each channel of the DAC8 uses a true
direct-coupled differential amplifier with a bandwidth in excess of
- The DAC8’s USB and S/PDIF inputs are designed to accept signals
from an HRx, 176.4kHz, 24-bit, High-Resolution music server system playing
HRx’s DVD-R recordings. See www.referencerecordings.com/HRxSETUPS.asp
for recommended music server setups.
- By virtue of all of the above points and our proprietary software
drivers, intrinsic jitter has been reduced to less than 10ps.
DAC8 HD AUDIO DEVICE SOFTWARE DRIVERS:
The DAC8’s USB driver software provides your computer with special
high-speed audio drivers not supplied by MS Windows or Mac OS. The Audio
Research USB drivers are specially designed to assure low jitter BIT PERFECT
data transfer between the server/computer and the DAC8 at all sample rates.
Our drivers setup the USB interface to guarantee bandwidth, independent
of active bulk transfers from the hard drive.
From the ARC icon in your computer’s input tray you can set the
DAC8 to any sample rate from 44.1 to 192kHz and allow the music server/management
software to up or down convert your music to the selected sample rate.
Music lovers can use custom sample rate conversion algorithms or other
file formats provided by third party suppliers such as Windows Media Player,
iTunes, J Rivers Media Center, Media Monkey, FooBar, and many others to
optimize your music experience.
The DAC8 is a fully balanced, zero-feedback, solid-state design utilizing
a direct-coupled FET output stage with generous regulated power supplies
and seven stages of regulation. There are separate new digital and audio
power transformers, and the board material is the same as what we use
in our Reference products. Dynamic, forceful, immediate, and possessing
remarkable resolution and transparency, the DAC8 is a sonic knockout that
is worthy of the finest music systems.
With a choice of high-resolution 24/192 S/PDIF inputs (RCA, BNC, AES/EBU
and Toslink) in addition to the highest resolution 24/192 USB available,
the ability to adjust sample rates, the DAC8 provides the new standard
in high performance digital music playback.