The Fairfield Circuitry Unpleasant Surprise – bias voltages unknown for the JFETS (so you may need to tweak them). I had to tweak a bit for the Barbershop before it was right, maybe the same here. Mind you, this is a bit of signal-destroying fuzz monster, so it may not matter as much.
I have checked the vero against the schematic from Pedal PCB several times, but I am yet to build this one – I would recommend you check it yourself before building it, or use a verified layout from Dirtbox layouts. I recently reworked an old layout from 2020, as it was a bit chaotic, and there was an error spotted (see comments below).
