Boss NS-2 Noise Suppressor Bundle with Instrument Cable, Patch Cable, Picks, and Austin Bazaar Polishing Cloth Compact noise suppression pedal for eliminating noise and hum in guitar and bass effects and amplifier setups Unique noise detection circuit preserves the natural attack and envelope of an instrument's sound Threshold//Decay knobs allow for shaping the elimination/suppression as desired BOSS 5-year warranty Great for killing hum and feedback