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Click to read the
Amanero
combo 384
Audio-gd products had
design and test based on the AP SYS-2722 (The top-drawer
professional equipment in world)
        
Reviews:
http://www.head-fi.org/t/806397/audio-gd-new-nos-7-2016-edition-impression-thread/60
How to update the firmware
Since Oct. 12th.
2016 , the unit had update the Ver 2 DSP software:
The
Ver 2 DSP software had improve on the timing performance, hence can
support high res music better and working better on high
oversampling input, users can hear more better detail in sound
quality . And the new software had addition the 3rd Nos mode for
users choice for their favorite taste.
What's new in the NOS 7:
The NOS 7 is the
ultimate design of the PCM1704 chip based on a lot our older PCM1704
product users feedback .
A lot users feedback they
like the NOS sound in the PCM1704 products, let me made the
decision to design a new software offer the better performance of
the NOS mode.
For the most real like
sound reproduce, Mr.Kingwa had spend a long term to design and
rectify the new NOS DSP software personally, not only based the the
software codes , but he also well know on the hardware
compatible and sensitivity on the sound quality
.
In the design had
applied -6db /oct passive analog filter ,
you can hear the wonderful sound of the NOS but you can't hear the
noise as other some NOS design .
100 people may had 99
type prefers . We had design two NOS modes in the software for users
select.
One is the best speed
data process, another is applied large algorithm to process the
data.
The full
new design concept had boost the PCM1704 support up to 768KHz even
1536KHz (test in emulation mode).
A high exact TCXO for the DSP chip
running in the asynchronous data process mode, it don't want the
source master clock input , which is reduce the signal transmit
request, FIFO design and rebuilt the clock by the DSP chip, can
refuse the jitter .
There are no design
compromises, no parts are upgradeable, built with all high-grade
audio parts, OCC wires, TCXO ,ect.
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 / 384KHz support .
IN6 , USB input,
,up to 32bit / 384KHz support .
Different to the Master 7:
The Master 7 had the 8X times
oversampling and NOS mode can be selection .
The NOS 7 had the more
advantage algorithm than the NOS mode of the Master 7 .
The oversampling design and NOS
design had different sound characteristic ,it is not which is better
but depend on the customer's prefer.
We can't exact explain the
different in English, please search in web .
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
power supply.
Below is the picture of the DSP input , was from the Amanero connect
the macBook pro .
And after the DSP process :
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Summarize