Pigtronix gives you all the crazy dirt and harmonics your heart desires with its Disnortion OFO pedal. Use the overdrive, fuzz, or octave functions separately or in any manner of combinations. A five-stage gain circuit, an Octavia-like octave feature, and a vintage-sounding fuzz are all available at the tips of your fingers (or toes) and can be modified with easy-to-use controls, like Level and Filter.