The ROCKMAN DISTORTION GENERATOR offers a variety of distortion effects. This is the actual unit that can produce the early distortion sound of B'z's Tak Matsumoto. Experience the Rockman sound of Boston and early B'z with this unit! - Model Name: ROCKMAN DISTORTION GENERATOR - Color: Blue/Black - Connections: Input, Output, Effects Loop - Power: AC Power - Condition: Shows signs of use Operation has been confirmed, but please understand that there may be some scratchiness. Please purchase with this in mind. The power turns on, and the levers and switches function properly. Sound was produced when tested, so it appears to be working.