Aye, the reason that I use the roland is so that I send a balanced output to the mixer. Though I'm sure I'd be able to find a dirtly cheap DI about somewhere. I also have warfedale subs and tops in the garage... there also happens to be 2 1600W power amps in there! maybe no need to DI out to the PA with that going on. but I'm pretty happy with that set-up until I get my Eden amp! Though the speakers are good enough, for the mean time to keep the cost down. They are 300W at 8Ohm. I have jacked straight in to the mixer which was okay, but the roland is a touch better. I have one of those behringer bass v-amps, which I could use although I can't seem to find a send/return fx and when I jack straight in the hum is ridiculous!