Foxx Tone Machine Clones: from CHEAP to EXPENSIVE on GUITAR - YouTube
fOXX™ Tone Machine™ | General Guitar Gadgets
Can you use the JoYo fuzz octave pedal as an octave up pedal by turning down fuzz all the way? - Quora
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
Foxx Tone Machine - SabroTone
TONEHOME - the World of Vintage Guitar Effects Pedals - Tone Machine
Fuzz Central -- Ampeg Scrambler
Foxx Tone Machine with Schematic Parts Only Not Working | Reverb