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Audio-gd products had
design and test based on the AP SYS-2722 (The top-drawer
professional equipment in world)
What's new in the Master 7:
Since the Reference
7.1 was released more than 20 months ago, we have spent more than 10
months in testing and development for the Master 7 release.
The Master 7 is the
ultimate design of the PCM1704 chip .
designed DSP processor is soldered on the main board directly for
best signal transfer and faster data processing and clocking, it
brings the detail, transparency and dynamics to another level
over all other audio-gd DACs. It allows users to hear the flaws and
perfections of the source recording (matched with a revealing amp) .
It supports up to
32bit / 192KHz through USB and I2S input, 24bit / 192KHz through
SPDIF inputs (NOS, 2X , 4X and 8X oversampling support).
There are no design
compromises, no parts are upgradeable, built with all high-grade
audio parts, OCC wires, TCXO ,ect.
It is a fully new
design concept . The SPDIF inputs have applied special interfaces
for processing data, allowing the highest sound quality for the
different SPDIF inputs.
IN1: BNC input, up to 24bit / 96KHz support .
IN2: AES input,
up to 24bit / 192KHz support .
IN3, RCA coaxial
input, up to 24bit / 192KHz support .
IN4, optical input
, up to 24bit / 96KHz support .
IN5 , I2S input,
,up to 32bit / 192KHz support .
IN6 , USB input,
,up to 32bit / 192KHz support . (In Non-USB version, IN6
is I2S input)
Fully balanced discrete analog stages without any OPA or coupling caps in the signal channel.
Non- feedback ACSS analog output stage.
Total of 21 groups dedicated power circuits (19 groups of
high-quality class A parallel connection PSU's with dedicated DC
supply double-stage PSU), and more than 50,000uF caps are used to purify the
We are design the Master 7 only put the point on high sound quality
reproduce , we have not design the mute design in it as our low end
products, because we have consider any mute design cause the sound
quality degrade . If the SPDIF sources ( only with some
few disc player models) have design the SPDIF
output signal switch on while playback and switch off while
stop, the switch noise will reproduce by the Master 7, the issue is
had a click sound while the source switch ( most happen on connect
with In 2 to In 4).
Fortunately most sources had
not switch the SPDIF output signal and always had output signal
while power on .