I'm confused about something: Isn't what you guys call front of house (FOH) after all a mixer? Don't all mixers have both line-in jacks and XLRs? Thus, what does the XLR output on my D.I. box (MXR M80) add to my rig that it's line out doesn't have? In other words, I've been seeing some bass "preamps" around that don't have the XLR output (the D.I. function) but have just the line-out. I'm interested in a couple of them (EWS Tri-logic and Zeibek Submarine). And if I got one of them, can't I just let go of my MXR M80 (which I love, but wouldn't need anymore if I use the new preamp I get)???? Can't the FOH guy just take the line-out from my "preamp" (e.g., EWS) and do whatever he needs to do?