PPA Headphone Amplifier

Projects > PPA Headphone Amplifier

The PPA is an audiophile-quality, DIY headphone amp designed by “Team PPA,” made up of HeadFi.org members Tangent, ppl, and Morsel.

Notable Features:

  • Compatable opamps:
    • AD8610
    • OPA627
    • OPA134PA
    • AD843
  • Switchable bass boost
  • Optional NiMH battery board for portable operation
  • LED Battery indicator

Price: $18 for PCB
More Information: