A destructive fuzz coupled with a lower and upper octave, all in a solid but quite bulky pedal. I really liked the violence of the fuzz, very explosive, and the added octaves are very effective and easy to adjust. It should be noted that you can't really use the octaves without the fuzz (except the lower octave by setting the volume and fuzz knob to minimum, but the sound is quite low). I sold it for this reason; I ultimately preferred to have a fuzz and an octave pedal separately to be able to use an octave pedal with a clean sound if needed. Also, I don't think the circuit is truly true bypass; it was eating my sound. Maybe it was just me.