This is Roland's legendary SD-90 hardware sound module. I purchased it used about 10 years ago. I'm selling it because I haven't been using it much lately. I've taken very good care of it, but it's quite old, so there's a chance of issues arising. Please understand this before purchasing. I've confirmed that it powers on, outputs audio via line out, that the buttons function, and that it receives input via MIDI cable. As far as I can tell, there are no operational problems. The sale includes the main unit and the power cable. I bought it used, so I'm not sure if the power cable is the original one, but it has worked without any problems for 10 years.