Here is another mini circuit project. This is a Mini Amplifier that have a simple tone control. Here is the Scheamatics

Mini Amplifier

You can comment here if get something wrong with this electronic schematic design

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Here is a simple amplifier for boosting the audio level from low-power sound cards or other audio sources driving small speakers like toys or small transistor radios. The circuit will deliver about 2 watts as shown. The parts are not critical and substitutions will usually work. The two 2.2 ohm resistors may be replaced with one 3.9 ohm resistor in either emitter.

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