DIY: MP3 Player Amp

We don't discriminate here. Obviously this amp was made for the use of an iPod but it could also be easily used with any type of audio player using the standard 1/4-inch audio jack. The total cost is under $30 depending on what supplies you already have. The designer for this wanted a simple system that he could leave in his garage that would give good sound for his iPod but not cost him an arm and a leg. This isn t your 10-year-old's science fair project; it does take a little bit of electrical know-how.

Intro Simple Amp [instructables]