So, forgive my complete ignorance here, please. I've checked the manual, and even asked the guys at Guitar Center, and none of them know an answer for me. I have a GK 2001RBP preamp, going into a QSC RMX 850 poweramp. At the moment, I'm putting the DI Out of the preamp into the power amp. This works for now, but it seems that it would be impossible to DI the head and run a cab at the same time. The only other output on it is the Chain out, which seems to be for dasiy chaining multiple preamps together(Can I run that to my poweramp?). Am I missing something, or is the DI really the only way to go into the power amp?