MXR Phase 90,MXR Phase 90 | Bax Music,MXR Phase 90 tone Mod done. Over the years using this pedal I've noticed a volume boost, you either like it or hate it, I hate it. With the tone Mod it cuts the boost for a level tone without overdriving your amp. Position number 2 reverts it to stock. Truly ,MXR Handwired 1974 Vintage Phase 90 Pedal CSP-026,I fried an MXR phase 90 by sending too high of an input voltage. More info in comments : r/diypedals