Yamaha DTXpress/DTXplorer/DTXtreme

Max:
I'm not aware of any module that has an output for EACH trigger, 
although the Rolands, I believe, have six outputs.

You could do what I did, and that is to add another DTX and separate 
your sounds into groups, i.e. Bass, Snare, Toms, Cymbals, using the 
four available outputs on the two modules.

Stephen