For sale is this used DS-1 Distortion from BOSS. The DS-1 provides a harder distortion effect for guitar and keyboard sounds. Instead of toneless, fuzzy distortion, the DS-1 faithfully reproduces all the subtle nuances of your playing dynamics, from whisper-quiet to screaming loud. The onboard Tone control allows you to tailor the overall sound to your liking. This pedal is used, has been tested and is fully functional with little signs of wear or use.