Harmonic Fuzz - custom shop pedal

This is a handmade custom pedal clone of the InterFax HP-1 Harmonic Percolator, made with premium components.

The original Percolator was designed in Milwaukee Wisconsin in the 1970’s as an original circuit notbased on anything previously available on that era. With silicon NPN transistor and a germanium PNP transistor, the circuit passes even order harmonics while suppressing odd order harmonics. These even order harmonics are more pleasing to the ear thanodd order harmonics.
There are two different versions I can build:
- The Stock version is much more wild, raw, and hard to control. It delivers an overcompressed sound.
- The Albini version is smoother and more controlled, reminds to an aggressive Fuzz Face with unique characteristics. When the Harmonic know is all the way up, it can get really compressed as well
It also features an additional toggle switch to select in between the stock diodes and some extra of
your choice. You can play around with some 3mm Red leds for a louder sound and less compressed
drive, or with some other germanium diodes for a compressed and creamy tone.
Made in Germany.


I ship worldwide. Please ask for shipping costs.

Feel free to contact me for more information.