A recent design by [Selenium] is super simple because it uses a single LM386 audio amplifier IC. You might be surprised that you can convert an audio amplifier to a receiver using just a handful ...

A regular Hack A Day reader sent in a tip about an LM386 stero amplifier with ... The volume control of this amp uses the DS1868 dual digital pot IC in place of the usual 10K pot providing 256 ...