If you're familiar with guitar pedals at all, this one should require no introduction. One of the most popular overdrive/distortion pedals out there, the OCD made a splash in the early '90s as the first drive to ever use mosfets as clipping devices, making it the first unique circuit on the market in years. This V1.7 OCD is the same classic drive, with some improved tweaks and features that Fulltone devised over the years. Although it only has three knobs, there is plenty of range in this tiny box, with tones ranging from "barely driven" to "the house is shaking", and everything in between. This Fulltone OCD V1.7 is in excellent condition and fully functional.