Audio Amplifier

[Sourabh Sarkar]

I have 20 watt 4 ohm sub woofer. I want to make a dual 20 watt audio amplifier. Which IC should I use or How can I make this amplifier.

 

[jackorocko]

one word... Chipamp

Then there is always class A, you can only find a million examples using google I would presume.