This is a heavily tweaked version of the classic Fuzz pedal Tone Bender.
With the 'Fuzz' knob turned down the Tone Wooter sounds like a warm, crunchy Distortion. Cranked up you get the wooly sparkle and the slight octave-up effect of emphasized overtones you'd expect from a classic Fuzz pedal. The secret behind this unique Fuzz sound are carefully selected Germanium transistors.
Plus: this pedal is highly input sensitive - change the volume knob on your guitar for an even bigger range of different kinds of fuzzieness!
The 'Tone' knob lets you shape the sound from thick bottom end to high-pass and everything in between, thanks to an adapted version of the classic "Tone Bender" tone control.