FULLTONE USA OCD GERMANIUM overdriveThe OCD pedal is the only pedal that uses 2 x Mosfets configured as hard clipping to Vref." The earliest OCDs used 2 x Mosfets plus 1 x Germanium diode, but very quickly these diodes became harder and harder to find, and they became expensive. Fulltone recently got their hands on a reasonably large stash of the right kind of Germanium diodes and decided to do a small run of the ultimate OCD: a Custom Shop offering with a few circuit tweaks, 2 x