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NFB-11.28  Performance Edition

(The Top Grade ESS9028 PRO Built In)

Discrete full non-feedback design

DAC+ Headphone amplifier / Preamplifier


Built in Sabre ES9028  Pro  
DSD64-512 , DXD, PCM 32bit / 384K  support from USB
A femtosecond Accusilicon 318B clock built in
8 group double stage PSUs built in

Price :  (Exclude shipping cost  )
USD409 (built in stock clock)
USD429 (built in femtosecond TCXO clock)
(built in femtosecond Accusilicon 318B clock)
Please send your address, name and phone number to
audio-gd@vip.163.com get the quote.  



Summarize Use Manual Specs Shipping Cost

Improvement may result in changes in specifications and
design without notice.
All diagrams test at input 0DBFS, output 3V.
Frequency band
 Output Level

 Headphone output : 10V Max
Variable output : 5V Max
Fixed output: 2.5V RMS

Output power
(Only for headphone.)

3500mW/25 ohm

1800mW/50 ohm

900mW/100 ohm

300mW/300 ohm

150mW/600 ohm

Output impedance

1 ohm /  Headphone output
2 ohm / DAC output

Input Sensitivity

0.5 Vp-p(75 Ohms, Coaxial)
19 dBm (Optical)

Support Operate Systems (USB)

Windows, Mac,Linux, Iphone & Ipad

Support Sampling   USB model: 44.1kHz-384kHzADSD64-512
 Coaxial model: 44.1kHz-192kHz
Optical model: 44.1kHz-96kHz
Power Requirement
1 Version  100-120V  AC 50/60 Hz
2 Version  220-240V  AC 50/60 Hz
Power Consumption
Package Weight

W180 X L220 X H55(MM, Fully aluminium ,with feet) 
AC power cord            X1
USB cable                X1



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