██╗   ██╗██╗  ██╗ ██████╗██╗  ██╗
██║   ██║██║  ██║██╔════╝██║ ██╔╝
██║   ██║███████║██║     █████╔╝
██║   ██║██╔══██║██║     ██╔═██╗
╚██████╔╝██║  ██║╚██████╗██║  ██╗███████╗
 ╚═════╝ ╚═╝  ╚═╝ ╚═════╝╚═╝  ╚═╝╚══════╝

A Class-D amplifier made with a LM324 Op-amp, a 555 timer and a N-channel FET.

http://www.youtube.com/watch?v=HJhOOJ4qTOc

I have no idea how something this simple and cheap can sound so good, and even without any kind of filter.

Time to test out som unconventional "speakers"!