Live Long, and Fuzz - The Vulcan Octave Fuzz

Aion's Vulcan is a recreation of the fOXX Tone Machine initially released in 1971. This is a fairly thick fuzz pedal that appears to have gone through a couple of iterations before it was discontinued in 1978. Aion FX provides documentation and specs for two versions both using 2N3565 transistors. The early version uses transistors with hFE in the 230-250 range while the late version uses transistors with an hFE of over 450. I'd initially intended to build the late version, but when all of my 2N3565s sorted low, I ended up going with an early build.