Wisdom in mind,   enthusiasm at heart.

NFB-16

Portable Discrete  DAC+ Headphone amplifier
USB or internal battery power supply(12.6V/2500MA)

Supports full speed Asynchronous Transfer Mode
Built in the Tenor TE8802 chip
Built in  Hi-end grade WM8741 Chip
With USB to coaxial conversion
Support analog input

NFB-16 Price:  USD193
Accessories: USB cable X1 , Battery charge X1

Please note :
1, If connect to Win 7, users want start the Win 7 then power on the NFB-16.
2, In power supply by computer model, make sure the USB cable connect well with the USB port. Replace by  a stronger or 2 in 1 USB cable connect between PC and NFB-16 maybe improved on sound quality.
3,   If exchange the power supply of NFB-16 between USB power supply and battery power supply,  please push the switch of NFB-16 to "OFF" , after waiting least 10 seconds then push to battery power supply . 
4,  If select between DAC and Line in model ,  least  10 seconds waiting is necessary .
5, The front plate 3.5MM Line In is same with the RCA line in on rear, so only can connect either at same time.
6, The NFB-16 for better sound reproduce have applied a new selector design, the DAC signal have not through the selector for the best sound reproduce, so select from DAC to line in, will have few seconds time the sound from low increase to normal.
7,  For better sound reproduce, while listen at USB DAC model, stop the line in source .
8, Make sure your computer can offer 500MA current and higher than 4.5V voltage (standard )  through the USB port if you only use USB power supply.
　

Gain setting :
        The NFB-16 have low gain (0DB) model and high gain model (+7DB) , separate setting in DAC model and Line in model.
        DAC low gain setting : without plugs.
        DAC high gain setting : Push into 4 pcs plugs (DAC feed to ACSS amp via balanced model).
        Line in low gain setting : Without plugs.
        Line in high gain setting : Push into 2 pcs plugs.
Note:    
        The plugs is free, please check the Accessories .

9 types digital filter users setting.

  

Please note:
     Please shut down the NFB-16 .
     If the input sampling higher than the NFB-16 setting sampling, maybe cause some noise output.

8X oversampling , Minimum phase apodising filter.
Up to 48KHz support.  

8X oversampling , Linear phase apodising filter.
Up to 48KHz support.  

8X oversampling , Linear phase half-band filter for backward compatibility.
Up to 48KHz support.

 4X oversampling , Minimum phase 'soft-knee' filter.
Up to 96KHz support.

4X oversampling , Linear phase 'soft-knee' filter.
Up to 96KHz support.  

4X oversampling , Linear phase 'brickwall' filter.
Up to 96KHz support. 

2X oversampling , Minimum phase 'soft-knee' filter.
Up to 192KHz support. 

2X oversampling , Linear phase 'soft-knee' filter.
Up to 192KHz support.

2X oversampling , Linear phase 'brickwall' filter.
Up to 192KHz support.