A concoction of my own, I call it the Doom Face! It’s a COT50 (acting as a sort of pre gain/boost) going into a silicon Fuzz Face (Q1 - MPSA13 Darlington Q2 - BC108) that then goes into a Stratoblaster to push the amp input stage harder. Also put a rotary input tone cap switch on the FF to dial in extra low end and also more gain. Big caps all round for max low end. The result is a massive saturated wall of fuzz, perfect for dooming up!