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The DAC3
fulfills the original promise of digital music reproduction. It surpasses
previous expectations of digital music quality. This performance results from
a unique combination of design techniques, new technologies and the superb
stability of our new Ultra-Clock: making the DAC3 a one of a kind product in
the market.
The surpassing musical performance rests on the solid
foundation of the Ultra-Clock™, a clock with performance found previously
only from separate Master Clock products. The Ultra-Clock™ provides jitter
performance 50x better than other clocks.
Specifications of 1 picoseconds RMS and frequency accuracy of 0.0001% define
new benchmarks in clock stability. This Ultra-Clock™ allows the DAC3 to
reproduce music with new levels dynamic expression and accuracy of timbre.
Your music communicates as never before, recalling the best of analog music
reproduction, without the limitations of either analog or other digital
technologies. The Ultra-Clock™ works in concert with every detail of the
DAC3’s design to achieve a new level of musical realism:
- Digital input isolation and
switching
- Multi-Stage Jitter rejection
- Linear Phase Digital filters
- Low noise Digital to Analog
conversion
- Class A Analog output stage Current
to Voltage conversion and analog filtering
- Class A Analog output buffer to
drive the preamplifier or amplifier stage
The DAC3 has
been optimized to provide the highest level of performance for all of these
critical functions. It can provide digital preamplifier as well as D/A
conversion and bridge from traditional CD or DVD player sources and from the
isolated USB input for computer music playback sources. The DAC3 has 5
digital inputs:
- AES with transformer coupled input
for high common-mode noise rejection in professional environments.
- Transformer isolated SPDIF RCA
input.
- Transformer Isolated SPDIF BNC
input.
- Wide bandwidth TOSLINK input for
versatile interface to consumer grade equipment.
- USB input with galvanic isolation
for optimized connection to a computer based music source with ground
and power isolation between the computer platform and the audio system.
All digital input sources experience 2 jitter
rejection stages, one analog PLL stage at the SPDIF input and a second
digital PLL stage at the Sample Rate conversion/filter stage. The new
algorithm’s 170 dB of digital dynamic range insures a totally transparent
conversion to 24/192 data rate for the final DAC processing. The Ultra-Clock™
used for the D/A conversion is located at the output of the sample rate conversion
stage. The USB input goes through a 3rd de-jitter stage to insure optimum
playback from computer based sources.
The PCM1792
dual-differential multi-bit delta-sigma DAC circuit achieves remarkable
analog performance. The 4.5VRMS true balanced XLR outputs provide nearly
130dB of dynamic range. The noise floor of this DAC/processor is so low and
so clean that the DAC3 is optimally used as a complete DAC/Preamplifier with
a digital level control. Because of dither applied to the 24bit word there is
no loss of effective resolution. The application of optimized dither insures
that the analog output noise floor maintains a clean sound, devoid of any
a-musical tones or artifacts. In a system with digital sources the DAC3 can
provide an optimum solution with the addition of one of the Bel Canto e.One
amplifier products, eliminating the analog preamplifier.
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