Audio gd HE-8 R2R DAC

For those who got love on PCM1704UK to order

Regenerative power supply
Apply 4 pcs the most real like sound DA chip PCM1704UK
Fully discrete real balanced  current transmission design
2 pc ultra high frequency 90/98 MHz Accusilicon 318B femtosecond clocks provide a synchronous clock for the whole unit
32bit / PCM384K asynchronous transfer Amanero 384 apply the FPGA synchronous clock
All inputs and digital parts have been isolated to the analog parts
Input signal sampling display
Support external 10MHz clock input