Roland JV-2080 Sound Module Includes two expansion boards I purchased this two years ago, but I found the synthesizer's preset sounds sufficient and couldn't really use it. I put it away in storage after about two months, so I'm selling it as part of a decluttering effort. I'm a complete novice, so I won't be able to answer detailed questions about the specifications. It's a used item, so there may be dust and what appears to be dirt on the top panel. I don't recommend purchasing it if you are concerned about these things. Operation has been confirmed. The expansion boards are as follows: * SR-JV80-02 Orchestra * SR-JV80-09 Session