One thing I've noticed while comparing Pro Jr schematic to other amps is that it seems like the Pro Jr has way more components than I would expect for a "simple little amp". Glancing back just now, I see up to R33 and C21 on there - I may have missed something. That's 54 resistors & capacitors plus everything else to make it work, all for a single input, two knob amp. That being said, I really have loved mine though it's in a pine cab with a Ragin Cajun now. And I have been reviewing PJ stuff the past couple days because I think I'm ready to recap it and maybe mod try a few common mods to it. But, there just seems to be a whole lot in there for such a "simple" amp.