I originally built this Tone Bender clone way back around 2010 but the wiring was sloppy and it ended up just a circuit board in a box. More recently I decided to rewire it and give it a permanent enclosure.
The OC75 transistors were in some of the original units and they truly sound fantastic in this build. I got them matched from Small Bear Electronics way back in the day.
The MKII circuit can go from splatty gated fuzz to something smooth and violin-like depending on how you bias it and where the controls are set.
Here are three videos of this Tone Bender. First the build, then some demos.
Tone Bender MKII Fuzz Build:
Tone Bender with a Stratocaster Demo:
Tone Bender MKII with a Les Paul