“This is a Yamaha DX7 synthesizer keyboard. I know very little about keyboards but here is what I see about this one. It seems to work fine and it sounds good. There is a little “door” on the top right side but there is nothing inside the door. I’m guessing there is some kind of plug in item that can go in there to maybe add more features but I don’t know that for sure. The surface has light general wear as would be expected from age and use, but nothing large or serious. I don’t have a manual to operate it so I can’t guarantee that absolutely every function is working. All the buttons work and each button changes something.
Lastly, the four lowest bass keys on the left side of the keyboard…C, C sharp, D, and D sharp sit lower that all other keys and do not work. All the other keys depress and respond instantly with a very smooth and quick action. Please view the four non working keys in the third and last pictures above. ”
Click here to search for synths on eBay