A classic choice for high-fidelity audio. It can deliver up to 14W of power on a 12V supply and is known for its low harmonic distortion.

Often used in car stereos, this IC can provide a high-power output (up to 22W in bridge mode) and often comes in kits with built-in heat sinks. Step-by-Step Circuit Guide (TDA2030 Example)

Designing and building a is a popular DIY electronics project because it is versatile enough for car audio, portable speakers, and home hobbyist setups. Using a 12V DC power supply allows these circuits to run off a standard car battery, a 12V adapter, or even a series of AA batteries.