This is a small Stereo amplifier 3W + 3W using BA5406-IC. It use 12V power supply as source of this project. and use a few part so easy to build.
This is a 4 transistor audio amplifier circuit. Which is a 4-transistors complementary push-pull amplifier, that shows the basics of audio amplifier design.
This is TDA2822 small stereo power amplifier. People like TDA2822. Me too. Why? Dual Amplifiers in one. With DIP-8 similar for LM368(Mono). Easy uses. Give power watts at 1W + 1W at 4 ohms speakers. It is enough. We are happy Listening in our corner. Relax... Start voltage supply of 1.8V to 15V. The wide a lot. Save energy with only 6mA, Min. The bandwidth expansion rates at 40dB 120kHz. Cheap and easy