The Blues Driver BD-2 effector, offering a wide range of tones. - Model Name: Blues Driver BD-2 - Color: Blue - Control Knobs: LEVEL, GAIN, TONE - Power: 9V dry cell battery or AC adapter - Output Terminals: OUTPUT - Input Terminals: INPUT Thank you for viewing. There are some minor scratches on the main unit, but there are no operational issues. Also, due to the seller's circumstances, I am organizing my belongings. If you purchase this item together with the sobbat DRIVE Breaker DB-1, which is currently listed at the same time, I will offer a 10% discount on the total amount! Please feel free to contact me!