Check this out:
This is my father's band, Mystify. They are an INXS tribute band, and I've had the pleasure of being part of that experience. This is v1 of the electronic drum set he had, at one of the more recent shows
This is v2, this is a setup I helped design and wire together.
I built an XLR "spine" to connect everything
So what's happening here is this is the drum set takes 16 channels to run (compared with like...2 to 4) and those outputs pass through Studio 192's to Steven Slate drum software running realtime through a Macbook Pro. 4 additional channels run to a backup Roland drum machine that serves as a live-change backup in case the Mac or software fails during a show, so the drum beat goes on as long as the mixer guy picks up the queue.
There's also v3 which I need to take a pic of, which includes a swap to acoustic drums with triggers for a hybrid sound. Needless to say, this house (and the concert venues he goes to) rocks drums pretty hard.
I'll have to see if I can upload some videos in action or maybe see if I can pull a recording straight out of one of the mixing board outputs some time. It would make a great sound check file for car audio!
For those that remember the C5 Vette I got to build a while back, it was for my father as well and that's why we went so aggro on the bass and midbass. He's "kinda" into it.