LM386 Audio Amplifier - DIY LoFi Amp by Synthrotek

The LM386 Audio Amplifier circuit is Synthrotek's classic take on a simple lofi amplifier that gives you variable gain, volume control, and works best with instrument amplification. It also works great as a cheap and dirty synth amp that you can put into the device of your choice.
Features and specifications:
- Comes with a speaker
- Can be used as a preamp
- Can power big speakers (though not terribly loud)
- Build with either 3.5mm or 1/4 inch jacks, both are included
- Power output: 700mW with an 8Ω speaker
- Requires a 9V battery or power supply (not included)

[@jamesbtex]

Actually it sounds good for such a small amp. I bet the original guts in that cabinet were a lot bigger. It's amazing how far electronics have come. I remember our English teacher telling us that someday all homes will have personal computers in them and we just laughed at him. Now we have the power of a mini-super computer in our hands called a cell phone.

[@synthrotek]

Yes, much larger! ICs have become very powerful

[@mapdock]

What would be the top end in terms of how much speaker this could power? Granted, the volume may be an issue but curious if you have guidance there?

[@synthrotek]

It can power a 15" speaker or more, with the 9V battery (or 9V wall wart) it can offer around 750mA output. You can get more if increase the supply voltage to +12 (some versions of the LM386 can operate on up to +18V)