Particle is a granular delay / pitch shifting pedal. It chops your signal into small grains and then does various strange, trippy, robot things to it, using the techniques of granular synthesis in real time. Results range from radical pitch and delay modulation to shimmering repeats to stutter/glitch sounds.
Made in USA. Requires a 9V 100 mA center negative power supply (does not take batteries).
3 pitch modes: detune, density, LFO
5 delay modes: random, density, LFO, random pitch, reverse