D-77
 (Dual ES9038Pro +1 FPGA )

Dedicated Discrete Fully Balanced DAC
Built In FPGA Processor to Reject Jitter 
Dual Sabre ES9038Pro
DSD , DXD 32bit / 384K Support From USB / HDMI
Built with OCC and Hi-end parts

Custom order options:
1, Custom order two pair RCA outputs，replace ACSS outputs ，free:

2:Upgrade three stock clocks to Femtosecond TCXOs for slightly improved the sound transparency ,price is USD60 . (Only available for D-57 . The D-77 has built in Femtosecond TCXOs already)

3:Upgrade the stock 100M clocks to Accusilicon ultra clocks, price USD38. If customer choice option 3, the option 2 don't need choice.
         

4:Upgrade the 2 pc Crystek Femtosecond clocks on Amanero USB interface, price USD15.


5, Custom order Isolator for Amanero USB input for separate the GND between computer and DAC,price is USD30, sound transparency improve a little.(The unit after upgraded USB isolator, it can not support cell phone USB connect .)