Universal Audio 2192, Руководство пользователя

Страница: 3 / 55

A Letter From Bill Putnam, Jr.
__________________________________________________________
- i -
Thank you for purchasing the Model 2192 Master Audio Interface, the first product to combine
Universal Audio’s long history of high-quality vintage analog gear with advanced digital technology.
The 2192 is the perfect two-channel master audio interface for every digital studio. It performs both analog
to digital (A/D) and digital to analog (D/A) conversion and provides a high-quality master clock source and
clock distribution for your entire studio. The internal digital clock of the 2192 was designed for extreme
stability and jitter-free operation, and its onboard phase aligned clock conditioner circuitry removes jitter
from external sources, so conversion quality is unaffected by clock source. Two separate word clock inputs
are provided, as well as AES/EBU, S/PDIF, and ADAT S-MUX inputs, and any of these can be used as
external clock sources. Four parallel word clock outputs allow the 2192 to be used as a master clock source
without the need to daisy-chain or cascade the clock through external devices.
The heart and soul of the 2192 is the analog circuitry used in its A/D and D/A converters. The analog signal
path uses DC-coupled, fully dual-differential, matched-FET, all discrete Class-A circuitry, resulting in
ultra-low noise, excellent transient response, and unmatched sound. No capacitors or DC servos are used
in the signal path since these degrade audio quality and image stability and introduce phase distortion.
Our no-compromise approach and extensive history in analog and digital circuit design ensure that your
converted signals are totally accurate and of the highest possible fidelity.
Analog signals are converted to digital in full 24-bit format, at sampling rates of up to 192kHz. During A/D
conversion, the digital signal is output to all digital outputs (AES/EBU, S/PDIF, or ADAT S-MUX)
simultaneously. Audio digitized at sample rates of 176.4 or 192kHz is carried over AES/EBU in single- or
dual-wire mode, and ADAT optical I/O utilizes S-MUX interleaving. The S/PDIF specification, which includes
192kHz 24-bit audio, is fully implemented. The 2192 D/A converters can also be set to output the signal
directly from the A/D converters, thus enabling “true confidence” analog monitoring of the digitized signal.
Digital to analog conversion is supported just as comprehensively. Any of the 2192 digital input sources
can be converted to analog, with selectable clock source: internal clock, the digital audio source signal, or
an external clock source separate from the digital audio. D/A conversion is always accomplished at the
sample rate of the digital audio source signal, even if the 2192 is synchronized to an external clock source
that is running at a multiple or submultiple of the digital audio sample rate. The 2192 can also transcode
(convert) digital audio between AES/EBU, S/PDIF, and ADAT S-MUX in real time, using any of the available
clock sources. Multi-segment LED bargraph metering is provided for all analog inputs and outputs, with
timed peak-hold digital overload (input) and digital peak (output) indicators. Finally, an internal universal
auto-sensing, filtered, multi-stage regulated power supply supports 100-240VAC and 50-60Hz power for
trouble-free operation world-wide.
Most of us at Universal Audio are musicians and/or recording engineers. We love the recording process, and
we really get inspired when tracks are beautifully recorded. Developing the Model 2192—as well as
Universal Audio’s entire line of quality digital and analog audio products designed to meet the needs of the
modern recording studio while retaining the character of classic vintage equipment—has been a very
special experience for me and for all who have been involved. While, on the surface, the rebuilding of UA
has been a business endeavor, it’s really been so much more than that: in equal parts a sentimental and
technical adventure.
We thank you, and we thank my father, Bill Putnam.
Sincerely,
Bill Putnam, Jr.