Taking a historical design and putting a new spin on it. This Psi Fuzz by Keeley Pedals delivers a truly rockin' muff fuzz sound. For big, chunky fuzz riffs and scorching leads alike. This pedal would sit nicely on the pedalboard of anyone looking for a psychadelic groove to their fuzz. The midrange is prominent and the bass is nice and tight giving you that sweet chunk! Features 3 knob controls of Voice, Voltage and Cream you can really control your fuzz to a huge range.