FTM (FOXX™ TONE MACHINE™) RTS PCB – General Guitar Gadgets
FOXX Tone Machine – DIRTBOX LAYOUTS
The fOXX Tone Machine is back! | guitar moderne
Foxx Tone Machine Black | Musician's Friend
Guitar FX Layouts: Foxx Tone Machine
Foxx Tone Machine | Reverb
Foxx Tone Machine Fuzz PCB | Effect Pedal Kits
Foxx Tone Machine - Carcharias Effects
Foxx Tone Machine Fuzz Kit | Effect Pedal Kits
Foxx Tone Machine (Reissue) Purple Fuzz | Reverb
Warm Audio Foxy Tone Box Fuzz | Delicious Audio
Tone Machines Blog: fOXX Tone Machine (1972)
Mystery: I built three copies of the same circuit (fOXX Tone Machine) from the same stripboard layout; one works, the others do not. I measured the transistors and all the collector voltages