The front end, tonestack and the output stage are all borrowed from the Big Muff, but the two Muff gainstages is replaced with a discrete op amp (by Joe Davission) modified with a odd feedback transistor clipping configuration. It's a VERY loud circuit. Way louder then the loudest Big Muff I've built.
Verified.
ReplyDeleteThe trimmer should be set so that the collector of Q4 is at about half voltage.
Freppo and someone in the FSB thread mentioned the top end sounding grainy or gate-y, and I would agree. The circuit also has decent guitar-volume clean-up.