The Tetrad is the successor of the Four Horsemen. We started with four switchable diodes, then added the ability to stack them, as well as series/parallel switching for each. The result is a huge array of fuzz tones on top of an already versatile circuit. This versatility makes the Tetrad an excellent choice for just about any fuzz need.


Gain - controls overall circuit gain.
Tone - custom designed tone stack to give a wide tonal range while still cutting through mixes.
Level - controls output level. Unity volume is at 11 o'clock.
Diode A - series/off/parallel
Diode B - series/off/parallel
Diode C - series/off/parallel
Diode D - series/off/parallel