Recently I have learned how to building this like guitar distortion pedals and guitar mini(practice)-amps. Now I will be selling them. I also take reasonable requests for distortion pedals and amps. If you find me a schematic of the pedal or amp, I can make it, and ship it to you for the fee that it costs to do this. The best part is that you do not have to send me the money until the pedal is shipped. Before I build a site about this I would like to see how many people would like to buy one, so if you would like a homemade distortion pedal or amp, post on this topic.