Keeley PSI Fuzz


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We set out to take a classic design with lots of history  and make it obviously something new.  We took the op-amp version of old PI and inverted one of the stages, brought out the midrange, tightened the bass, and most importantly, added a Germanium transistor output!  Yes, this is a opamp-transistor hybrid.  Don’t be miffed by op-amps in your pie folks, the germanium touch at the end makes everyone smile around the shop here.