I had a brief spell of madness over the winter. This is what resulted. Basically, it is an amb a20 line amp modified for a gain control. I whipped together a bipolar power supply. It has more gain than you can use but it's a lot of fun and sounds great. If anybody wants to try this out, I'll pif a board and most of the parts plus I'll get around to writing up instructions - you'll have to supply an enclosure and power supply. If there's more than one person that shows interest, I'll figure out a fair way to pif it. Here's the amb project http://www.amb.org/audio/alpha20/ (http://www.amb.org/audio/alpha20/). btw, OTT stands for over the top - there really is no reason to have 0.1 ohm output impedance for a pedal. I guess I could alway beef up the power supply and drive a speaker.
(http://i.imgur.com/iL5Eayb.jpg)
(http://i.imgur.com/BiJSqqp.jpg)
Mad but cool. I did the enclosure and knob too 8)