high end 7.1 channel DAC for OPPO 203

 

I recently designed and made highe end 7.1 channel DAC baord for OPPO 203.

the purpose of this DAC is top enjoy Multi channel SACD /DSD file  as well as multi channnel PCM files .

 

Features.

 

1. premium Sabre ESS9038PRO  DAC chip

2. best possible op amps: OPA2134  and OPA134 for each channel

3. ground isolation between OPPO main board and DAC section with opto coupler

4. separated clock (TCXO Japan NZ2520SD-80MHz : 20 ppm).

5. intensive use of local linear power supply (total 10 )

- separate analog and digital section of DAC chip .

- separate left and right section of DAC chip .

- dedicated power for 80 MHz clock

 

main DAC board with daughter board ( 4 channel analog sections )

 

 

Daughter board for anlaog section