I had an Alesis D4 way back when it first came out. It was a pretty good module back in the day. Just about any type of trigger will work with it, although it does not support any of the dual trigger (separate head and rim) pads. I tried it with an acoustic set using ddrum pro triggers but found the triggering to be quite poor in terms of dynamics. I think it could be useful module if you wanted to trigger some percussion sounds with your acoustic set-up.