Boss CS-3 Compressor/Sustainer Bundle with Power Supply, Instrument Cable, Patch Cable, Picks, and Austin Bazaar Polishing Cloth Compact compression/sustainer pedal with high-quality circuitry Compresses loud signals and boosts softer signals for a smooth overall sound Onboard Level, Tone, Attack and Sustain controls for precise tonal shaping Low-noise design for super-quiet operation BOSS 5-year warranty