Hi, I finished an LM386 based amp this week and was wondering if there are any other IC's that I could try out in place of the LM386; a direct equivalent with the same pinout that I can drop right in the socket. I'm mostly curious to know if there is a chip that consumes less power so the batteries can last longer. Also, is the LM386 considered to be a power hog, or is it pretty efficient compared to similar chips?
I'd also like to know about LM386 equivalent chips that can produce more volume output as well. I will use the amp plugged into the wall outlet sometimes and wouldn't mind having a chip I can drop in for more volume when current consumption and battery life isn't a factor.
Lastly, can anyone tell me the most efficient power amp IC('s) they know of - regardless of pinout? Something that provides a reasonable amount of volume and will not drain batteries quickly. Any tips on limiting current drain when designing an amp circuit? I'd like to build a very energy efficient amplifier in the future.