It was made by combining the following circuit fragments: input gain stage is the Muffer, followed by the IC gain stage of the Fat Gnat, a tone control from the Fender Pro Roc amp and the output buffer of a TS-808! High gain boutique sound at its best, though not a clone of any existing pedal.
Here are some ideas for mods that can allow you to customize the sound for the best response with your gear:
- Use a bipolar opamp for IC1, even the LM741 will sound good!
- If it is too fizzy sounding, increase C5 to 270pF or 560pF
- For more bass response, increase C4 to 2.2uF or 4.7uF
- Use red LEDs for D1 and D2 for more output
- The tone control shown on the schematic has a big mid-range scoop. If you would like a more traditional response, increase C8 to 470pF or even 1000pF
Here's the schematic for reference. I laid it out for board mounted pots in a 125B with top mounted jacks.