Search for: Your Source for DIY Pedal PCBs and NostalgiTone! › GuitarPCB Forum › Topic Tag: opamp op amp a b dpdt Viewing topic 1 (of 1 total) Topic Voices Posts Last Post Opamp A B Pad DPDT board Started by: Anonymous in: GuitarPCB Build Support 3 5 4 years, 2 months ago Anonymous Viewing topic 1 (of 1 total)