YAMAHA DI-01 DISTORTION distortion pedal. This is a vintage effector. As shown in the photos, I have confirmed its operation with a 9V battery installed (the battery will be shipped with the pedal). It produces the warm distortion I expected! The exterior shows signs of use and paint peeling, but there is no major damage. There is no battery box leakage. I mainly used it connected to a keyboard, distorting organ-like sounds. Of course, it's designed for guitar, so it's a perfect match for guitar as well. - Brand: YAMAHA - Model: DI-01 - Type: Distortion - Controls: OUT LEVEL, TONE, DISTORTION - Input/Output Terminals: INPUT, OUTPUT Thank you for viewing. Type... Electric Guitar Type... Electric Guitar