Please be sure to read the profile. Roland SP-808 groove sampler zip disk set, used. This is a sampler once used by professional musicians for recording. The disk drive read the OS disk. It can be used without errors. The sound from the headphone output was clear and easy to hear, and sample playback, editing, recording, and sequence playback have all been confirmed to work. I haven't checked all the functions because there are too many, but no functional problems have occurred. (Did you know that the SP808 can trigger MIDI modules and input sample patterns chromatically with a MIDI keyboard? I'm amazed at the high performance of this machine. Zip disks have become an outdated media, so the resale value has decreased, but there are certainly enthusiastic fans who love retro and can express their creativity!) There are some scratches and signs of use. To prevent the disk drive from being damaged during transportation, it will be securely packed in recycled cardboard with multiple layers of bubble wrap. The main unit, OS disk, 7 spare Zip disks, and power cord are included. Please refrain from purchasing if you are sensitive to used items.