FY-2 Silicon

The FY-2 Companion Fuzz took a giant step away from the Germanium, Fuzz Face architecture, version with the Silicon model.

My Build. 

It sounds mid scooped, splattery, gated, notes don't get along as in an octave fuzz but there is no octave! This is the nastiest of the Japanese fuzzes. The fuzz control is more of a mild shape control. I build mine with a potentiometer to control the amount of mid scoop and an output buffer/boost to combat the volume drop (maximum volume might be lower than unity in a stock model).

Here are a couple of rough sound clips in scooped and unscooped orientations.