DSP-1 Device CharacteristicsกG
audiophile grade components, including DALE resistors, WIMA
& EVOX caps (German brand), custom order NOVER (UK brand) caps, all
audiophile grade input & output sockets and gold IEC socket.
Reference 8 is the first DAC to apply truly balanced diamond
amp output, has AES and BNC and RCA and Optical, four separate groups
of digital input. Reference 8 applies a high performance clock to keep
the timing more steady.
Reference 8 uses
8 PCM1704UK chips soldered on the circuit board. This upgrade can bring
more detail to the output.
Reference 8 has
our newest design of Diamond analog amp for the output stage, this
upgrade can improve on the soundstage and background.
Reference 8 Technical characteristics:
Digital & Analog / Left & Right Completely Separated Internal
Layout, from power transformer and rectifiers etc, the radiating
interferences are carefully shielded.
Reference 8 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 jitter. So Reference 8 can
offer a clear and focused soundstage, apart from accurate and neutral
reproduction of the recorded disc/music.
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 can't just follow pure
theory, but you must also venture the practical side too), but final
results show that using entry level CD transport or hypermarket grade
DVD player, the improvement of sound quality is huge compared to a
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
4. Diamond differential output circuits : Benefits from two high speed diamond differential output
circuits, excellent linearity and low phase distortion. Diamond
differential circuit is being loved and supported by more and more
audio fans. Although the circuit is complex, the sound quality is
impressive. We've done a lot of study and experimentation on diamond
differential current these many years, aiming to get a better solution
of circuit design.
For a DAC, high analyzing ability
is the most important requirement. The detailed recurrence of
resolution lies in the upward and downward characteristics and the
noise level of the output amplifier. Because output amplifier is the
bottleneck, if the upward characteristic is not good enough, the signal
cannot be followed correctly on time and amplifier can only catch half
or even less of the signal level when it disappears. This leads to a
downsizing of the original range of signal output from DAC, which
directly causes obscurity or even loss of sound effect and a low
analyzing ability. A lot of DACs, therefore, even with a highly
analytical D/A converter in the digital section, cannot play most of
the details due to its low analog circuit speed. To get a good upward
characteristic, the only way is to use a high-speed low-noise
transistor amplifier. Even operational amplifier and tube cannot
compare with high-speed low-noise transistor amplifier in effectively
lowering the TIM distortion which has a big impact on the sound quality
and promising a pure and pleasant sound delivery.
uses WBT tin solder.
6. Vibration and
To achieve the best performance of Reference 8, heavyweight pure
aluminum alloy chaises is used which prevents the eddy current of
transformers 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 mode:
Reference 8 has AES and
BNC and RCA and Optical, four separate groups of digital input. Two
pairs of XLR
and RCA output. Optional USB input available.
8. Power supply:
Reference 8 uses three R-core 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 65,000uf audio grade NOVER capacitors
are used to ensure ample and smooth power feed. The NOVER capacitors
are specially made by NOVER (U.K.) according to Audio GDกฆs requirement.
21 groups of voltage regulators are combined into two-stage regulators,
separately feeding power to different circuit parts for a pure power
supply. To achieve Silent operation, the control circuit is powered
with a 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.
approximately 15 Kg
W430 X L430 X H85 (MM)
signature is musical and detailed, with a little coloration and a
little on the warm side, and will be forgiving of poor recordings.
Reference 9 can allow the sound to be a bit richer and better.
is better not to stack gear on top of each other, if one must
on other gear, place paper or some other insulating material on top of
other gear, because Reference 8 has conductive aluminium feet.
must be given to pairing 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).
One stock power cable (PC grade).
power cable, XLR cables & Canare coaxial cableกG
Cable links http://www.audio-gd.com/pro/cablesEN.htm