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Audio Amplifier

Are types of audio Hardware used to amplify sounds

Notes

Classes

AB Class

  • Higher fidelity than D
  • Very low noise floor / output hiss
  • Use more power than D

TDA7850

  • 4 channels, 50 W each, 4 Ω
  • Made by STMicroelectronics
  • Available boards
    • XH-M180
      • Can run passively
        • But better to pair with slow moving fan
      • DC 8V ~ 18V, ideally 12V max 16V
        • 100W~150W

D Class / Tripath Amp

  • Some hiss unless it's an expensive design
  • OK for sub (low) notes
  • Available boards
    • ZK-TB21, Aiyima TPA3116
      • 50Wx2+100W
      • TPA3116D2
    • ZK-HT21
      • 160Wx2+220W
      • TDA7498E
    • ZK-MT21
      • 2x50W+100W
      • CS8673E

Resources