Audio Schematics
Please Note:
Audio circuits has many amplifiers, mixers and frequency control circuits. All circuits are listed alphabetically on the Circuit Index page and in date order on the update page. All contributors are listed on the credits page.

If you have problems try my help page first. Most circuits on this site use SI Notation. Due to large volumes of email, I regret that I can only answer questions about circuits on my site.

For help or to contribute please email me
  1. 2 Watt Amplifier A low distortion amplifier using discrete components.
  2. ECM Mic Preamplifier A high quality preamp for electret mic inserts
  3. Tone Controls
  4. Stereo Line Driver
  5. TDA2030 8 Watt amplifier
  6. Audio Notch Filter For audio frequencies 100Hz - 10KHz
  7. 6 Input Mixer 3 Mic inputs, 3 Line Inputs
  8. Hi-Fi Pre-Amplifier by Graham Maynard
  9. Peak Reading Audio Level Meter
  10. Doorphone Intercom by Laurier Gendron & myself
  11. Computer Microphone by Lazar Pancic
  12. 100 Watt Amp Circuit External Link to John Tirone's Site
  13. 3 Band Equalizer
  14. Voice-Over Circuit
  15. Quadraphonic Amplifier
  16. 15 Watt Amplifier by Sergio Garcia
  17. Audio VU Meter by Matthew Hewson
  18. Soft switching Amplifier with Tone Controls
  19. Audio Level Meter
  20. Dynamic Microphone Amplifier
  21. Headphone Amplifier
  22. Low Voltage Preamplifier
  23. Class A//A-B 100W Amplifier by Graham Maynard
  24. Vinyl Amplifier by Graham Maynard
  25. Op-Amp Microphone Preamplifier
  26. Buffer Amplifier by Graham Maynard
  27. The Gem Amplifier by Graham Maynard
  28. 150W MP3 Car Amplifier by Youssef Bouterfes
  29. 24 Watt Class A Amplifier by Marc Klynhans
  30. 32 Watt Stereo Amplifier
  31. 200 mW Watt Stereo Amplifier
  32. 2 Watt Amplifier by Carlos Feldman
  33. 12 Volt 5 Watt Amplifier by Julius Chen
  34. Audio Preamplifier
  35. 25 Watt Amplifier by Julius Horfilla
  36. Loudness Control
  37. Audio Bargraph Display
  38. TDA2822 Modified Input Circuit by Rodney Byne
  39. HiFi Premplifier
  40. Hi Gain Premplifier
  41. 4 Way Equalizer by Roberto Grilli
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