【High-Quality Overdrive/Distortion】 Maxon's ROD881 is a popular overdrive and distortion pedal among guitarists. It's equipped with a variety of control knobs to achieve diverse tones. 【Versatile Tone Adjustment】 You can finely adjust your preferred sound using the Gain, Master, Bass, Middle, and Treble knobs. The boost function allows you to further emphasize the sound. 【Robust Design】 The robust body design allows for confident use in live performances and studio recordings. It operates on 9V DC and is convenient to carry. - Brand: Maxon - Model Name: ROD881 - Type: Overdrive/Distortion - Control Knobs: Boost, Effect, Gain, Master, Bass, Middle, Treble - Switches: Boost, Effect - Power: 9V DC It was repaired at a repair shop around last summer, so there are no particular issues.