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NFB-1(Version 2014 )(DSD / DXD )(Since 1st May 2014)
Dedicated Discrete Fully Balanced DAC
DSD , DXD support from USB
32bit / 384K Sabre ES9018
32bit / 384K Asynchronous Transfer  USB-32 Chip

Price :  USD650 (Exclude shipping cost)

   

                       
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Click to read    FAQ
Reviews :  
http://www.head-fi.org/t/625945/audio-gd-nfb-1-32

Click to read the USB-32 character                              USB-32 Introduce
Audio-gd products had design and test based on the AP SYS-2722 (The top-drawer professional equipment in world)


Summarize
Fully balanced design built by discrete analog stages without any OPA and couple caps in the signal channels.
Non- feedback ACSS analog output stage .
Uses  R-core transformer , more than 20,000uf audio grade NOVER capacitors are used to ensure ample and smooth power feed.
A total of 5 groups class A parallel connection PSU power supply for all digital and analog circuits.
To achieve high S/N, the control circuit is powered with separate regulator.
Uses most Hi-end grade parts and exact match transistors.
5 groups digital input :   coaxial *2 / Optical *2 / USB

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