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(2017 version. Since 1st.May)

The full balanced design based on Master 9
Class A PSUs built in
Discrete  Headphone amplifier / Preamplifier
Super Exponential Volume Characteristic
8000mW at 40 ohm output
OCC and hi-end parts applied




Use Manual


Custom Option

Shipping Cost

Font plate functions introduce:

HP/PRE button :
          Select the NFB-1AMP output model  , display "H" mean for headphone output, display " P" mean for preamp output.

Gain button :  
          Select the Fast / Slow volume control characteristics.
          H: Fast increase the volume , 64 steps in total (0-63).
          L: Slow increase the volume ,100 steps in total (0-99).

Input button :
          Select the NFB-1AMP inputs from IN 1 to IN 5.

Volume buttons :
          Select the NFB-1AMP volume control .


Two sets Exponential Volume Characteristic

         The mini remote shipped without battery because the either DHL and EMS limit shipping by plane , customers want to buy one CR2025 battery and assemble in the remote.

Discontinued the analog idle input short circuit function:
         The unit  had design the analog idle input short circuit for avoid the disturb between different sources.
         This design also applied in a lot high end
brand devices.
         The working theory : 
Without the idle input short circuit ,if the input 5 and input 4 had connect two extra DACs,  while users select the either input 5 and input 4 , the another input signal will fire through the circuits and mix  into the using signal, even though this signal is  weak  but still can degrade on the sound quality.
          With the idle input short circuit function : if user select either the input 5 and input 4, the another input signal will short circuit then no any signal fire through circuits , can keep the sound quality had not degrade.
       Below case users want to discontinued the idle input short circuit function, pull off the 4 jumpers as mark on the photo:
      1, The same extra source not only connect the
unit analog input, but connect with other amps simultaneity.
      2, The same extra source connect to the
unit different inputs  at simultaneity.


Make the NFB-1AMP have different sound flavors:
        The different signal cables and power cables can change the sound flavors of the unit.

The display auto dark :  Push into the jumper is auto dark .Please operate the jumper while the unit power off .


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