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NFB-20.2

Discrete  DAC+ Headphone amplifier / Preamplifier
Supports full speed Asynchronous Transfer Mode
Built in the Tenor TE8802 chip
Built in 2 Pieces Hi-end grade WM8741 Chips


Price:  USD1480  (With remote control)

                        

            
  
Summarize Use Manual Specs Technology Detail Custom Option Shipping Cost


How to install the TE8802 driver?

Fully balanced design built by discrete analog stages without any OPA and couple caps in the signal channels.
Non- feedback ACSS analog output stage .
Uses three R-core transformers (135W total) separate power supplys for the digital part , right channel and left channel.
More than 50,000uf audio grade NOVER capacitors are used to ensure ample and smooth power feed.
A total of 11 class A PSU groups are used to purify the power supply. To achieve high S/N, the control circuit is powered with separate regulator.
Uses most Hi-end grade parts and exact match transistors.

Four-channel digitally controlled relay-based volume control to avoid channel imbalance and improve sound quality. NFB-20.2 has 99 steps volume level control in both high gain mode and low gain mode.
5 groups digital input :
  AES / BNC+RCA coaxial / RCA coaxial / Optical / USB
3 groups analog preamp input :  XLR / RCA / RCA
Preamp / DAC output :
  XLR / RCA / ACSS (variable)
Headphone output : 4 pins XLR / 6.3MM SE
USB Audio Class 2 High-speed Input from PC/MAC
Supports full speed Asynchronous Transfer Mode
Resolutions support 16 / 24-Bit with sampling rate support 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz  ( USB model)
Supports up to 24Bit/192KHz (coaxial & AES )
Supports 2X , 4X and 8X oversampling customers setting
Memorizes all settings and it could resume the last settings when power on.


Sound Characteristics: 
   
"Neutral but smoothness sounding ,it doesn't sound skeletal or digital (or metallic). There's meat aplenty on them bones . It's a sigma-delta DAC chip implementation without the dryness, neutrality without the emotional disconnection" - John Darko
If only the RCA or 6.3MM headphone  is used, is the NFB-20.2 being wasted or not fully utilized?
       NFB-20.2 is a real balanced DAC built in headphone amp . It has balanced output (ACSS, XLR and balanced headphone output) and single-ended output . There are 4 ACSS amplifiers in the NFB-20.2 for balanced outputs and balanced inputs. Even when a single-ended output is used, the Dual WM8741 DA chips will perform fully thanks to the fully balanced design.
Note:
          
NFB-20.2 have 3 feet under bottom side for the best balance state , if customers want 4 feet , please ask the custom order .

Modification guide on headphone jack for 4-pin balanced headphone output.
  
Click here to read:   modification guide

Parts for the modification is USD30. (Includes one female 4-pin plug and one male 4-pin plug, some tapes and some WBT tin solder.)

What are the differences between these popular DAC chips:
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@ Dual WM8741 ES9018 AD1955 AD1852 WM8740
SNR 128 DB (Mono) 120 DB 120DB 114DB 117DB
DYNAMIC RANGE 128 DB (Mono) 129 DB 120DB 114DB 117DB


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