This is one of Gus Smalley's guesses about what might be inside a Schumann Two Face Fuzz. Like many of Gus's schematics, it's an idea, not a fully finalized circuit, and I wouldn't even consider building it without breadboarding it first. Also, Gus has faked all the variable resistor pots with single resistors and faked all the voltage divider pots with pairs of resistors, so it looks more complicated than it is. (It's essentially an NPN fuzz and PNP fuzz in one box with an input buffer/splitter, mixable outputs, and a clean blend). It has been breadboarded (by the person who ultimately traced the Two Face) and was said to be extremely noisy, so much tweaking would probably be required. Read more and see some of his other guesses
here. Note that Gus used Si transistors for his schematic, while the Two Face uses Ge. Also note that his guess was actually a lot simpler and lower parts-count than the Two Face schematic turned out to be.
If you'd rather try the Two Face, look
here for schematic, veros, demos.