The TDA1562 datasheet is high output power 70W /4 ohms Bridge-Tied-Load(BTL) class H and AB high efficiency power amplifiers in plastic power package TO-220 [...]
SEE a lot of Small IC Power Amplifier Circuits, You will love them!
IC amplifier 18 watt circuit is an IC number HA13118 Hitachi Hard. That the IC will be integrated amplifiers, class AB. And this cycle is to use a bridge circuit. [...]
This is a TDA2030 Bridge amplifier circuit diagram with PCB. It gives an output power of 35 watts to 40 watts at 8 ohms speaker. With using a +/- 15V…
This is TBA820m Amplifier circuit stereo 2W+2W, supply voltage 12V, Easy to build and cheap. on DIP-8pins same LM386. but TBA820M use easy better. [...]