Are those inputs just the same as in DTXpress IV? At least they seem to be.
http://dtxdrums.yamaha.com/library/2d_product_photo/dtxdrums/dtx550k/Also, there are four trigger/switch -inputs (snare, chrash, ride, hihat)and four trigger/trigger -inputs (toms1-3 and kick). Does e.g. a Roland two-zone snare pad work in these trigger/trigger inputs correctly?
I would like to have two chokeable crashes and it means sacrificing the snare input for the second crash, if I've understood right.