I saw this posted somewhere else a while back, and saved it for future reference. Not my info, but I'm quite sure it's pretty accurate.
I've read the Bazz Fuzz elsewhere as well, so almost positive that's right.
...the Fix'd Fuzz schematic there are 4 distinct stages - a standard boost transistor stage - as is seen in the first stage of the Big Muff or in the old Electro Harmonix LPB-1. The second stage "Fuzz 1" is the old DIY classic Hemmo's Bazz Fuss. The third stage "Fuzz 2" is a strangely mis-biased fuzz face circuit. The final stage is a tone control comprised of a Big Muff Pi filter and gain recovery stage.In passing I'll add that the Twosome is one of my all-time favorite pedals, and I've actually owned several iterations of it (dual fuzz, VSTwosome, SSTwosome). Both sides of the pedal are just killer in every way!
It was my love of the Twosome that made me hunt down the one and only top-mounted Twosome they ever made. Currently on my board and never NEVER going anywhere!
Current board: (the Farndurk is changing to The Elements + The Heisenberg as soon as my Heisenberg arrives in the mail...!)