Hi guys, I've recently started using the GK 700rb 2x10 combo and I'm very impressed with it, I use it as a backline as I'm always di'ed wherein lies my problem. I generally leave my amp di settings to pre-eq (less mucking about sound wise and I happen to like the raw sound) but does this mean I cant use any effects? ie if I have a few pedals connected to the patch bay/fx loop the effects work locally (through the amp) but dont seem to di to our main rig (which kinda defeats the purpose), they work fine post eq but as I said I'd like to get them working in the pre-eq state (being a complete luddite when it comes to amps maybe its supposed to do this?). Secondly what does contour and presence do? and finally, due to the "unique" design of the combo (the scooped back) it occurs to me if I ever buy a seperate cab how do I stack the combo? cheers.