Hey i have a Roland SPD-S My brother is filling in for a band and they want him to bring the pad for bass drops the only thing is idk how to hook up the device to a pa, I hook it up to my interface and run it through my computer with a line. there's no xlr output on the roland itself which is half retarted. I have to connect a 1/8 line with an XLR with the prongs on the end to hook it up to snake that's running into a PA, Any suggestions here? I leave in like 20 mins