Yamaha DTXpress/DTXplorer/DTXtreme

Ed:
I thought that would probably be the case. And, if it would have 
worked, I would have probably needed a splitter that would consist of 
two RING jacks going into a single RING jack (rather than the normal 
RING and TIP jacks going to a combined RING/TIP jack). Oh well, I'll 
try to get by.

Just one more reason why I should follow Jade into the MIDI world, I 
gess.