Wisdom in mind,   enthusiasm at heart.

NFB-3 (384K)
Dedicated Discrete DAC

32bit / 384K Asynchronous Transfer  USB-32 Chip
32bit / 384K dual DA chips
Class A PSUs applied

Price:  USD330 (Exclude shipping cost)

The rule of the power ON /  OFF:
Power On :
     Source power ON ---->  NFB-3  power ON ----> Amp power ON ( preamp , headphone amp and integrated amp )
Power Off:
    Amp power OFF ( preamp , headphone amp and integrated amp ) ---> NFB-3  power OFF ---> Source power OFF .

Driver download:    http://www.audio-gd.com/AudiogdUSB32v2.0forwin.rar
384KHz /32bit support : Foobar 2000 V1.15 through KS / ASIO output model  & OS iTune
384KHz / 24bit support: Foobar 2000 V1.15 WASAPI output model (DS output model support up to 24bit / 192KHz)

Flavor button:
Select the oversampling and digital filter response of the NFB-3 (384K). ( The sound if have different depend on the users audition ability )
Display 1:  Applied IIR Low Latency  Interpolation Filters
       

ACSS/RCA button:
Choose between RCA and ACSS signal output configure, display 1 is the signal configure for ACSS output, display 2 is the signal configure for RCA output.
No matter what mode is selected , the NFB-3 (384K) still output from ACSS and RCA sockets and the signal only working with ACSS technology for the most neutral sound , unless the ACSS sockets connect to an active ACSS amp, then the RCA signal will mute automatic .
　

Selector button:
Select the input modes of the NFB-3 (384K) .    Display U : USB input.     Display C : Coaxial input.    Display O : Optical input.