Looks like the module version of the DW-8000, a very fun and 80s machine. What will it do for your Roland? Which model? It won't make it envious, I'm sure...No, to find more technical about it get info on the DW-8000 if you can't find any on the EX.Lotsa links from this site, Virtual Synth Museum,Harmony Central, Synthony, etc...mn