Junk, DigiTech Whammy with AC adapter, harmony and distortion control. - Brand: DigiTech - Model Name: Whammy - Power: With AC adapter - Input/Output Terminals: 1/4 inch jack - Controls: Harmony, distortion, volume knob - Condition: Used It was modified and I've had it for a while, so I'm selling it because I can't use it all. It comes with a handwritten instruction manual by spi (as shown in the image). It's distorted and unstable, so it's junk. Thank you for looking.