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NOS 7(The PCM1704 Ultimate Design)
Dedicated Discrete Fully Balanced DAC

Fully new DSP software
Built in 8 Pieces  PCM1704UK
Supports up to 768KHz
32bit / 384K Asynchronous Transfer  Amanero combo384
OCC wires & TCXO applied

Price:    USD2180  (Exclude shipping cost)

      

                     
Summarize Use Manual Specs Technology Detail Custom Option Shipping Cost

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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