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Audio-gd products had
design and test based on the AP SYS-2722 (The top-drawer
professional equipment in world)
Master 1 is compatible with KRELL amplifiers.
A cable can be made with one side connecting to Master 1 ACSS
outputs, other side to a KRELL amplifier CAST inputs.
The ACSS output pins:
Pin 1, GND
Pin 2, Hot
Pin 3, Cold
KRELL amplifiers have lower gain versus audio-gd Master
series amplifiers when using the CAST connection, so customers can custom
order the Master 1 to have higher ACSS output gain if expecting to
connect to KRELL amplifiers.
Fully balanced class A design built by discrete analog stages without any OPA or coupling caps in the signal channels.
Non- feedback ACSS analog output stage.
Uses three R-core transformers (135W total) with separate power supplies
for the digital components and right and left channels.
More than 50,000uf audio grade NOVER capacitors are used to ensure
ample and smooth power delivery.
A total of 8 groups of high-quality class A parallel PSU's,
four double-stages for dedicated DC supply.
To achieve a high S/N, the control circuit is powered with
Uses high grade parts and exactly matched transistors.
Four-channel 99 steps digitally controlled relay-based volume
control avoids channel imbalance and improves sound quality.
5 analog inputs:
RCA X2, XLR X2, ACSS X1
XLR / RCA / ACSS
Memorizes all settings and resumes the last settings when
Master-1 can work with all sources and power amps worldwide, but its
ACSS output can only work with audio-gd Master series power amps.
Advice: 1, Master-1
has extremely high fidelity; its SQ is neutral. It can show how good or how bad a recording or source is.
2, It is better not to stack gear on top of each other, if it's necessary to
stack Master-1 on other gear, place a piece of paper or other insulating
material on top of the other gear, because Master-1 has conductive aluminium
3, Attention must be given to matching suitable power cable and
of our preamp and power amp from John Darko.
reviews in headfi.