Thanks. I was just looking at the transistors in the Green and Black/Yellow versions I have. The green Russian has transistors with green (KT3102) and white (E) dots and the black/yellow EHX/Sovtek version has transistors with a white triangle with EN2 (the N2 means February 2001 I believe). My green version should be very similar to my black/yellow version but sound-wise they are slightly different, be interesting to analyse why during this series.

Only ever as a rough approximation. I edited out for time but the two other meters showed 380 and 372, I believe that's because they use a different set of test parameters. The Common Emitter isn't dependent on hFE (only RC and RE values) so we're all good circuit-wise. I sometimes use a curve tracer if I really want to know specific parameters but remember that heat also affects the hFE. In comparison, all of my KT3102EMs measure a lot higher - from 450 minimum to well over 600 in two cases (their datasheet suggests a range of 400 to 1000), and I checked that on all 2 meters. They're the ones with the triangle and the letters E and P on the front. The green Russian has ones with green (KT3102) and white (E) dots and the black/yellow EHX/Sovtek version has the white triangle with EN2 (the N2 means February 2001 I believe).

@@MusicTechknowledgy Thanks so much! I'll build my pedal as is and follow along with the rest of your series!