Search for: Your Source for DIY Pedal PCBs and NostalgiTone! › GuitarPCB Forum › Topic Tag: P.U.R.P. Viewing topic 1 (of 1 total) Topic Voices Posts Last Post Pump’d Up Rangemaster Plus RC filter addition Started by: Anonymous in: GuitarPCB Build Support 4 10 3 years, 6 months ago Anonymous Viewing topic 1 (of 1 total)