Search for: Your Source for DIY Pedal PCBs and NostalgiTone! › GuitarPCB Forum › Topic Tag: BMP Viewing 2 topics - 1 through 2 (of 2 total) Topic Voices Posts Last Post Big Muff OpAmp – Bass Mod Switch? Started by: Anonymous in: GuitarPCB Build Support 2 3 3 years, 3 months ago Anonymous BMP OP AMP v2 Started by: Anonymous in: GuitarPCB Build Support 2 6 4 years, 4 months ago Anonymous Viewing 2 topics - 1 through 2 (of 2 total)