DAC with Tube Pre-amplifier

DAC with Mullard E88CC (6Dj8) buffer
  1. New handmade DAC
  2. USB-XMOS(USB) 
 to Optic SPDIF
  3. DAC  
CS8416-WM8742-E88CC
  4. 老婆的 DAC gain 3.5k-8.5k 高次偶次諧波.
  5. modify  PCB D/A with 6Dj8 buffer
  6. 老婆的 DAC
  7. High voltage Tube 6Z4
  8. through R-C-L-C to 230V
  9. Change 6DJ8 to E88CC
  10. D/A module CS8416+WM8740 fix volume to buffer.
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