This is a Boss DS-1 professionally modded by Kinnatone to have more bass and mids, less piercing highs, numerous clipping options, and a world of huge synth sounds. The synth tones can vary from subtle to full-on sub-bass fuzz destruction. The sub octave can get LOW, so tread with caution. If a haywire Boss OC-2 mated with a bass-friendly, fuzzed-out DS-1, the result would be something like this pedal. It CAN function strictly as a dirt pedal going from boost all the way through saturated fuzz. You don’t HAVE to activate the synth circuits, but that’s where the fun lies. Priced to move. Shipping via Priority Mail.