Wisdom in mind,   enthusiasm at heart.

NFB-1DAC( 2016 )
(The best NFB-1 model we ever had)
Dedicated Discrete Fully Balanced DAC
DSD , DXD support from USB and I2S
32bit / 384K Sabre ES9018
32bit / 384K Asynchronous Transfer  XMOS U8 Chip

Use Manual:

Setting button:
        The output voltage level can select between 2.5V +2.5V (XLR) and 1.25V +1.25V (XLR), which suits different amps . 
        H: High voltage level output. 2.5V +2.5V (XLR) or 2.5V (RCA).
        L: Low voltage level output. 1.25V+1.25V(XLR) or 1.25V (RCA)
The display auto dark :  Push into the jumper is auto dark .Please operate the jumper while the unit power off .

Digital filter setting：
SET ： Push into the jumper is NOS, pull off is Oversampling . Available of PCM signal input from USB or I2S .Please operate while the unit power off .
IIR0 与IIR1：Available for DSD input .
                 IIR0                       IIR1
50K         Pull off                    Pull off
60K         Pull off                    Push into
70K         Push into                 Pull off

FIR ： Push into for setting Slow roll off , pull off for setting Fast roll off . Please operate  while the unit power off .


DSD / PCM support from I2S input :
The DSD/PCM support not only from the USB input, but the I2S input.   The NFB-28 can detect the I2S input signal, if input DSD signal, it will auto to remove the DSD pop noise while select the DSD track . (Had test working well with Amanero and Xmos U8 ) .