nothing special or probably un-done before....this USED to be the "stereo make up gain stage" i built for my mn3007 clone theory build...
ever eco-conscious <vbg> i decided to cascade the two preamps. and add a footswitchable diode clipper. all built in a re-cycled 1590 from my very second build.
now...it may not seem like much, but it's real nice and creamy!! i built mine with the balls pot on the side of the pedal, so i can roll it with my foot to adjust it. you may wanna do different.
anyways...it's built, it's verified, if you want a schematic, you gotta draw one!!! it's basically a pair of eh lpb1's cascaded, with a footswitchable diode clipper between e of q2 and ground.
easy breezy sleazy goodness... can double as a fuzz or an overdrive. if you leave off R9, and turn the gain pot all the way down, you get farty nasty octave down/ringmod/escobedo kinda horrible nasty sounds,
that SOME of you guys may enjoy...i just added the resistor to prevent that, but when ya breadboard this, you may like it better without.
i didn't measure voltages, i cranked the top trimmer full blast, then the bottom up till i found a sweet spot. if you get rf noise, turn vr2 down just an RCH.
there ya have it;
something to do one of these days when you're REALLY freakin' bored!!