Many Electronic circuit projects in simple ways of learning

108+ Power amplifier circuit diagram with PCB layout

If you are looking for a power amplifier circuit to make a project. In my site. You may find on categories:: Amplifiers.  But it makes you take long far. Also, use the search box at top right.  Which sometimes it may not look good.

Thus, I post this article, the collection of power amplifier circuit with PCB layout. I try to keep the top 108 circuits. So too hard for reading.  In the list below.  There are many levels of output. You can choose from 1 watt to 1,000 watts. OR,  By type of OCL, OTL, BCL.  Or, any Class Audio amplifier circuit diagram.

Power amplifier circuit diagram with PCB

Only amplifiers are not enough. It needs preamplifiers, tone control, mixer, microphone preamplifier, VU-meter, Protection and more. Look at below!

Note: Before you will buy the parts and build the circuits. Please check and learn more. Some circuit is not a suitable beginner. Also, I never build it. So I cannot confirm. But if you love to make electronics. It will be your good experience surely.

Small-Power Amplifier, under 20W

They are suitable for a small application. For example, to increase the output of melody sound, for experiment Electronics learning.

MINI  Auto amplifier circuit

Between 20W to 50W range—If you are young. You will like this list. Imagine when you listen to music in your room. It is so happy!

Best for HOME—50W to 100W

Imagine you are watching a movie with your family. Sound power is very realistic with these circuits.50W main amplifier OCL

The popular 100W Power Amplifier circuit

When you have a mini party. You use this. Your friend will be amazing for your electronic skill. We love it.

High Audio Amplifier Circuit Diagram

More 101 watts up—They may be suitable for the beginner. They are PA Audio system and expensive. And take long times for making.

12V CAR Audio Amplifier circuits

All used in a car or in a house with a 12V DC power supply. Some circuit requires high current. Most use an IC chip. So easy and small.

  1. 50W BCL Car Audio using TDA1562
  2. 40W Mini Audio
  3. LM383 Power OTL 5.5W
  4. Small IC circuits for speaker

PreAmplifiers – Pre MIC

Tone control & Graphic equalizerHi Fi preamplifier with tone controls project

  1. Classic low noise tone control circuits
  2. Hi-Fi preamplifier with tone control**new** Low distortion. Use low noise transistors Frequency response 20Hz-20KHz
  3. Old low noise pre-tone using RC4739
  4. Bass Treble Active tone control
  5. Passive tone control, Non-IC & transistors
  6. Super pre tone control project
  7. 3 circuits of NE5532 preamp tone control
  8. Top 3 Graphic EqualizersLow noise, Cheap, and easy
  9. TDA1524 stereo tone control
  10. Low noise tone control project, NE55532
  11. Super boost bass by UA741
  12. Audio loudness control

Audio Projects

  1. Mini Subwoofer simulator
  2. Micro mixer
  3. Super stereo digital Echo
  4. Linear opto isolator
  5. Add dimensional sound from 2ch to 4ch
  6. Separate stereo signal with LM324
  7. The cheap & small hearing aids project


  1. Simple delay speakers
  2. Speaker protection
  3. Tweeter speaker protection

More TAG

Sometimes, you may need to look at projects or circuits but you don’t have the idea please see below. It may can help you!

:: 100 watts :: 50 watts

:: ICs :: Transistor :: Bridge :: CAR

:: Cheap :: Class AB:: High End

:: High Power :: Home :: Linear OP-AMP

:: Microphone :: MOSFET:: OCL

:: OTL:: Audio :: RF :: Signal

:: Small :: Stereo


ICs :

LM324 :: LM386

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This Post Has 17 Comments


  2. 20k watts please publish the pcb layout and parts list

  3. tone control with bass midle treble with ic lm4558
    crosover with bass midle and treble tnx

  4. I require two nos. HA13001 with PCB. How can I get these. Please let me know the cost of ICs & PCB.

  5. you have to reconstrucion preampl to phono 1-2

  6. i like this

  7. I. have multimedia. speaker intex it 2000.I want. to crreate dc connection. on iit plz help me

  8. Can you design a small active board maybe 25cm x 25cm or multiple board to plug into each other with 3 output chanel around 600watts each chanel at 8ohms and maybe around 1000watts or more at 4ohms with Bluetooth???

    Thank you.

  9. Do you have a 12VDC amplifier schematic? Low voltage mono. For use as a small PA.

  10. …something like the old CB radios did for an external speaker outside the vehicle.

  11. Merci
    Cicuit power variable 0 to 50 and 0 to 20amp half swiching very smal pcb

  12. Adear Sir I would like a catalog of your audio amps 20 to 50 watts, kits, as I like to build them
    And they make great gifts for my neighbors at Christmas. Thanks. May God bless you,
    Yours truly, Bruce Corson Jr

  13. How to order your book?

  14. And the class D amplifiers? I didn´t see any circuit about this. I need some to build one in home!

  15. hay sir please create new schme for Subwoofer ic LA4508

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