@

Wisdom in mind,   enthusiasm at heart.

Home Products Warranty Shop Contact Us Shipment Chinese
@

NFB-12.1

Discrete  DAC+ Headphone amplifier / Preamplifier
Built in 2 Pieces Hi-end grade WM8741 Chips

NFB-12.1 Price:  USD215

NFB-12.1
   
        
  
Summarize Use Manual Specs Technology Detail Custom Option Shipping Cost

 How to set the NFB-12 DAC output as variable line level only?
   
The NFB-12 has one group Line out for dedicated DAC output, In default its output level setting is at variable model . But owners can set it to can select between variable and fixed or output variable line level only . See the photos, change the jumper to "variable" side to set the DAC output to variable only.

         

 The NFB-12(12.1) Functions:

     Front plate:
    
Output switch: Select output between headphone, Fixed DAC output and Variable DAC output.
    
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.
    
Selector 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.
(The DAC output level can be chosen between variable and fixed, see below).


9 types digital filter users setting.

For NFB-12 only, NFB-12.1 setting on the front plate.

                  

Please note:
     Please shut down the NFB-12 and pull off the power cable then make the setting change.(NFB-12.1 can select the setting directly)
     In 4X oversampling setting ,while select SPDIF input but without input signal, maybe output some noise.
     If the input sampling higher than the NFB-12(12.1) setting sampling, maybe cause some noise output.


NFB-12
@
NFB-12.1 Digital Filters Description Frequency response diagram from headphone / RCA output
( Click to zoom)
OS : 8

Filter : 2

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

Input sampling 44.1KHz,24Bit,
-2.5DB at 20KHz
Input sampling 48KHz,24Bit,
-0.2DB at 20KHz , -3DB at 23KHz
@
@
@
OS : 8

Filter : 1

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

Input sampling 44.1KHz,24Bit,
-0.2DB at 20KHz , -3DB at 25KHz
Input sampling 48KHz,24Bit,
-0.2DB at 20KHz , -3DB at 25KHz
@
@
@
OS : 8

Filter : 3

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

Input sampling 44.1KHz,24Bit,
-2.5DB at 20KHz
Input sampling 48KHz,24Bit,
-0.2DB at 20KHz , -3DB at 23KHz
@
@
@
OS : 4

Filter : 2

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

Input sampling 44.1KHz,24Bit,
-3DB at 15KHz
Input sampling 48KHz,24Bit,
-3DB at 17KHz
Input sampling 96KHz,24Bit,
-0.2DB at 20KHz , -3DB at 31KHz
@
OS : 4

Filter : 1

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

Input sampling 44.1KHz,24Bit,
-3DB at 15KHz
Input sampling 48KHz,24Bit,
-3DB at 17KHz
Input sampling 96KHz,24Bit,
-0.2DB at 20KHz , -3DB at 31KHz
@
OS : 4

Filter : 3

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

Input sampling 44.1KHz,24Bit,
-2.8DB at 20KHz
Input sampling 48KHz,24Bit,
-0.3DB at 20KHz , -3DB at 24KHz
Input sampling 96KHz,24Bit,
-1DB at 20KHz , -3DB at 42KHz
@
OS : 2

Filter : 2

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

Input sampling 44.1KHz,24Bit,
-3.2DB at 20KHz
Input sampling 48KHz,24Bit,
-2.5DB at 20KHz , -3DB at 22KHz
Input sampling 96KHz,24Bit,
-0.5DB at 20KHz , -3DB at 25KHz
@
OS : 2

Filter : 1

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

Input sampling 44.1KHz,24Bit,
-3.5DB at 20KHz
Input sampling 48KHz,24Bit,
-2.7DB at 20KHz
Input sampling 96KHz,24Bit,
-0.8DB at 20KHz , -3DB at 25KHz
@
OS : 2

Filter : 3

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

Input sampling 44.1KHz,24Bit,
-2.5DB at 20KHz ,  -3DB at 22KHz
Input sampling 48KHz,24Bit,
-2DB at 20KHz ,  -3DB at 23KHz
Input sampling 96KHz,24Bit,
-0.2DB at 20KHz , , -3DB at 40KHz


@

备ק号:粤ICP备05020367号

权Ҧ:          庆华  ͧӭ响

Copyright(C) 2004   www.audio-gd.com    All Rights Reserved@