The Fredric Effects Super Unpleasant Companion is a combined Shin-Ei FY-2 Companion Fuzz and FY-6 Superfuzz clone in a single enclosure that's exactly the same dimensions as the original Companion Fuzz.
The circuit is a faithful reproduction of both the FY-2 companion fuzz and FY-6 Superfuzz. Choose either with the big toggle switch and the controls are:
FY-2: Fuzztone, Volume (little switch does nothing)
FY-6: Gain/Sustain, Volume, tone switch