I made it with original 2x Siemens BC169B and 1x CDIL BC184B transistors. The original pedal has variants of both B and C hfe combined of those transistors, but I also tried BC109C and they are too much, so I went with the “B” hfe transistor variants. Sockets are installed so one can always play with different types, there is no right or wrong, just preference. This also sounds better at 18V vs 9V to me 😀
Probably my favorite boost/drive so far on an already lightly overdriven amp. It’s like the “tone of the gods” with great sustain and makes playing a breeze, like you have a bunch of compressors with sustain full almost. Very chewy yet raw/organic and precise tone when boosting. It does go into a fuzz tone if needed on full and it’s ungodly loud on a clean channel haha, but for drive boosting it’s amazing. The switch is just toggling 3 types of high end cut.