Wisdom in mind,   enthusiasm at heart.

NFB-11.32 (Full 32Bit / 192K)

Discrete  DAC+ Headphone amplifier / Preamplifier
32bit / 384K Asynchronous Transfer  USB-32 Chip
32bit / 192K Sabre ES9018

Price :  299  (Promo,Exclude shipping cost  )
Accessories : Power cable and USB cable . If customers want optical cable please inform while place the order .

The rule of the power ON /  OFF:
Power On :
     Source power ON ---->    NFB-11 power ON ----> Amp power ON
Power Off:
    Amp power OFF ---->  NFB-11 power OFF   ---> Source power OFF .

Connect the SPDIF output as an USB to SPDIF converter (The NFB11.32 shipping since 11th. Oct. 2012 , firmware version either #7 ,#9, #10 . While users want to use SPDIF output, the player or ASIO control panel must setting at 24bit . This function not in warranty .)
Use a RCA or BNC socket with wires, push into the white socket proper for have the SPDIF output , conversion from USB.

Please note:
      The NFB-11.32 built in high biase current amps , for most headphones at normal listen volume it is working at class A state , so working long time will become a little warm, there is better keep it have good are follow state .
      The NFB-11.32 must install the driver for Windows USB connect. Mac OSX , Linux and SPDIF without driver install necessary .

How to set the NFB-11.32 DAC output as variable or fixed level ?
   The NFB-11.32 has one group  dedicated DAC output, In default its output level setting is at variable model and fixed model . If users only want the variable model only , change the jumper as below picture .
      (Be care, if the NFB-11.32 DAC output connect to a non volume control amp , don't turn to fixed output model , or setting to variable output model only . The headphone output always have volume control. )

 The NFB-11.32 Functions:

     Front plate:
     Output switch:        Select output between headphone and DAC output ( Variable level) and DAC output ( Fixed level).
     Gain switch:           Select gain between low gain (+0DB) and high gain (+12DB).
     Volume knob:         Control the volume level of the headphone and variable DAC output.
     Input switch:           Select source between USB, coaxial and optical.   

     Rear:
     Power socket:          For power input and power ON/OFF switch.
     USB socket:            For USB input.
     Opt socket:              For optical input.
     Coax socket:           For coaxial input.
     DAC out sockets:    For dedicated DAC output. DAC output ( Variable level) and DAC output ( Fixed level).

Please note :
1,      The unit is based on the ES9018 chip, the ES9018 have built in the top grade PLL can avoid jitter, but this PLL have high request from the source , if connect with low grade source ( like the low grade PC sound card ) coaxial or optical may cause the sound drop off (distortion) . This is not the defect, the most electric engineers known the exact PLL have high request from the source clock.
       The USB have very low jitter so no problems .
       In our experiences, we only got less than 10 users feedback have encounter this matter and they most are report with these products:
       On board PC sound card or value USD10 PC sound card , Apple New Airport Express with optical connect , USD01 while over 96KHz output .