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DSP-1 Function
Operate:
About ACSS:
ACSS (Audio-gd Current Signal System) is
Audio-gd's system for transmitting audio signals in the current
domain. This concept, first seen in 1966, we have used for many
years, and since 2006, have evolved the technology to include all
audio signals in our systems from the digital source to the power
amplifier. Since 2007, ACSS components have become Audio-gd's most
popular products, with a great many customers purchasing them in
China and Hong Kong.
DAC
Reference One Applies Current Transmission Technology , even though
maybe you only connect to XLR or RCA output, but Reference One will
always operate in ACSS technology, and benefit from ACSS
technology, Therefore, XLR and RCA output will also definitely bring
about improvement in SQ.
DAC Reference One
Technical characteristic:
DAC Reference One is an upgrade based on DAC-8; it is also the
first product using LSI
processor DSP-1.
DSP-1 Devices Characteristics：
http://www.audio-gd.com/enweb/DACRE1.htm
1. Features:
Digital & Analog / Left & Right Completely Separated Internal
Layout, from power transformer and rectifiers etc, the radiating
interference are carefully shielded.
2.
Performance:
DAC Reference One has built in DSP-1 processor, which is a
Two-channel Digital Interpolation Filter and data in-phase processor
for digital audio. This Device offers advanced features for
high-performance digital signal processing (DSP) applications up to
250-MHz. Data and Master-clock in-phase processing are without
jitters. So DAC Reference One can offer a clear and focused
soundstage, apart from accurate and neutral reproduction of the
recorded disc/music.
Theoretically when using the DSP1, data will be running
parallel, achieving near zero jitter state, no matter the level of
CD transport attached, be it hypermarket grade or hi-end level, you
will still be getting the best and similar sound quality!
Practically, through some experiment, although we could perceive the
sound quality difference between differently priced and level of CD
transports (as an audiophile, you just can’t just follow pure
theory, but you must also venture the practical side too), but final
result shows that using entry level CD transport or hypermarket
grade DVD player, the improvement of sound quality is huge compared
to typical digital processor chip like PMD-100, DF1704 etc.
3. Clock phase noise:
Many amateurs are aware that jitter affects the quality of digital
and audio circuit, but the biggest effect is on clocking phase
noise, this gear has extremely low phase noise due to circuit
linearity and our sensible layout design, which guarantees pure
power supply as a whole, achieving high transparency, detailed and
transient performing sound signal.
4. ACSS output Module
:
The super scale ACSS module is newly developed with more advance
technology and dedicated for DAC Reference One to produce even
better sound quality. High precision electronic components are used
to guarantee accurate balanced output. All electronic components are
highly calibrated products in the circuit board. DAC Reference One
has true balance, RCA, and ACSS outputs. Whatever the output chosen,
the signal will go through the ACSS processing technique, ensuring
the original musical characteristics of PCM1704UK without any kind
of coloration.
5.
Tin:
DAC Reference One uses only One solder which is WBT tin.
6. Vibration and
interference resistance:
To achieve the best performance of DAC Reference One, heavyweight
pure aluminum alloy chaises is used which prevents the eddy current
of transformer from interfering with circuit board. The device net-
weight is 12.5 Kg without packing. The inner sections are separated
using 5MM aluminum boards among digital/analogue left/right channel
components, which eliminates interference among the circuits.
7. Input Method:
BNC coaxial and RCA
coaxial inputs are available. The difference of extra jitter, in
excess of what is produced by the transport, between BNC coaxial and
RCA coaxial or AES/EBU inputs, is 10 times less in BNC compared to
RCA or AES/EBU, and 20 times less than that of TA&T Optical input.
8. Power supply:
DAC Reference One uses three different types of power transformers
to match different electric circuitry. The power transformers and
rectifiers are carefully shielded from the electric field of the
power transformers and rectifiers’ frequency transmission. More than
50,000uf audio grade NOVER capacitors are used to ensure ample and
smooth power feed. The NOVER capacitors are specially made by U.K.
according to Audio GD’s requirement.
Total
applied 21 groups PSU.
19
groups of parallel voltage
regulators are combined into two groups of cascade-like parallel
voltage regulators to lower the internal resistance and to purify
power supply. To achieve Silent operation, the control circuit is
powered with separate regulator. Such power supply setup is rare in
domestic designs, and more common in Hi-end DACs made by renowned
Audiophile Companies, which plays a crucial role in the performance
of their DACs.
Specification
Device weight:
DAC Reference One approximately 15 Kg
Advice:
1,DAC Reference One has extremely high fidelity; its SQ is
neutral, accurate and neutral reproduction of the recorded
disc/music.
2, Don’t stack gears one on top of the other.
3, Attention must be given to matching suitable power cable, coaxial
cable and output signal cable.
Accessories :
One Canare coaxial cable,( we have BNC->BNC , RCA->RCA and RCA->BNC,
customers must inform us of their preferred type of cable while
placing the order). This product comes without power cable.
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