Boss OS-2 Overdrive Amp DistortionThe OS 2 OverDrive & Distortion from BOSS gives guitarists a choice of smooth overdrive or heavier distortion tones, or lets them combine both. It has Level, Tone, Drive and Color controls for precise tonal shaping, and can be used for a wide variety of rock styles. Flexible distortion pedal capable of producing blended overdrive distortion sounds Provides both "over the top" distortion sounds and less extreme overdrive tones for rhythm playing Specs