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
the option 2 don't need choice.
4:Upgrade the 2 pc Crystek Femtosecond clocks
on Amanero USB interface, price USD15.
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