MXR Bass Distortion M 85, Effect Pedal for Electric Bass, Distortion pedal, Developed by ""pedal icon"" and master of bass distortion Ryan Ratajski, Distorted and undistorted sound independently adjustable in volume, Distortion optionally with silicon clipping diodes (aggressive, biting, slightly compressed) or LED diodes (more open and voluminous sound), Treble of the distortion sound adjustable via tone control, Status LED, Compact and robust metal housing, Suitable power supply: Article no. #409939# (not included)