Good job it looks sick! Love my Promethium, it was my first PedalPCB build actually. I own an original 80's HM-2 and it is the most accurate sounding clone I've tried. It's a lot less noisy also which doesn't hurt.
This was the first time I’ve built it, and I was very pleased with the results. Super usable doom sludge to Swedish saw, and even makes a nice low gain sound with the guitar volume rolled back. I had a Rogue Metal pedal in high school that was an HM-2 with a single tone control, and I can get that vibe from the Promethium too. Wouldn’t mind building another for myself at some point.