Purchased used several years ago. This is the main unit only. It's the initial model of the DC DRIVE currently available. The battery holder cover on the back is damaged. I checked the operation for the listing, but no sound came out with batteries. It might work if you replace the battery snap. The 9V jack works. It produces a good old-fashioned sound. It has a crisp sound and can be distorted quite a bit. It also has a boost switch, which is surprisingly useful. The appearance is quite worn, but consider it part of the character. It's still usable, so I'll pass it on to someone who can use it. No claims, no returns. Feel free to negotiate the price. Please ask if you have any questions!