NFB-27.77   
(Dual ES9038Pro + FPGA Processor)

Discrete  DAC + Headphone amplifier / Preamplifier
Built in FPGA processor , reject the jitter
DSD , DXD support from USB &I2S
Dual 32bit / 768K Sabre ES9038Pro
32bit / 384K Asynchronous Transfer Amanero Combo 384
Built in OCC and TCXO ,no upgrade options
9000mW at 40 ohm (Class A, per channels )

Custom order options:

1, Custom order replace the ACSS output by RCA outputs :
      Price is USD5,without shipping delay   .
　

2, Custom order HDMI input replace RJ45 or USB of the NFB27 :
      Price is USD20, and 1 workdays delay .

3, Custom order High Gain model for the HE6 and low sensitivity headphones:
      The NFB-27H default had 16DB gain, customers can custom order extra +3 to +9 DB gain with 4 workdays leadtime. If connect with other high sensitivity headphones like over 115DB sensitivity , may turn few steps volume but had quite loud .
      +3DB extra gain, total +19DB, price +USD20.
      +6DB extra gain, total +22DB, price +USD25.
      +9DB extra gain, total +25DB, price +USD30.