It shows signs of use, but it works without any problems. Although there is no AC adapter, I have been using it with batteries. Operation has been confirmed. A 2m cord is also included as a bonus. The BOSS ME-20, equipped with a variety of effects. - Model: ME-20 - Effect Type: Multi-effect - Connection Terminals: 1/4 inch jack - Controls: Pedal, knobs, buttons - Color: Silver - Power: AC adapter or batteries Thank you for viewing.