The Gretsch Controfuzz is yet another variation on the Distortion + the key point of difference this time is the clean blend, which makes this a little different than the rest.
This layout does include a mod that increases the 10k distortion control to 100k, as 10k seems to be too small to be workable with this design. I think it must be a typo, as the design really doesn't work with 10k.
GRETSCH CONTROFUZZ - VERO LAYOUT
ORIGINAL BOARD & SCHEMATIC
The original used a slightly odd opamp that required external compensation.
image care of reverb
This is a relatively awful scan of the schematic that was included inside the pedal, which was common practice back in the day to some degree.
LTSPICE
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