Yep, it's the module version of the DW-8000 and it came out in 1985 . It's a cool digital analogue hybrid with sampled waves and analogue filters . It wont do anything for your ROLAND ( doesn't matter what it is ) , it is a very cool synthesizer module with no help from ROLAND or any others . It's worth keeping . If you can find the MEX-8000 , it will expand it's program memory .