Many folks here have the wrong idea about the current situation with DIY and audio... the place to find out more about it, and the burning amp event, I think it is about to happen for 2010 or just has... is
http://www.diyaudio.comYou will find pix of some fabulous home built equipment, excellent engineering discussions that include some of the top designers and engineers in the audio world (you have to know who is who perhaps to know...) and discussions of circuitry and engineering, as well as neophytes who are trying to get started... a wide range. The very best is rather astounding... enjoy!
_-_-bear