Wow, I am thoroughly impressed by the amount of support in here! I just received my Kemper Rack (unpowered) yesterday! Unfortunately, aside from doing a ton of video and manual research, and after I plugged it in, my initial impressions were meh. The unit is used so I updated the firmware, installed rig manager and am still working my way around. I obviously must have some settings not configured correctly, because it just sounds plasticky (is that a word?). I'm using the main 1/4" outs to a Mesa Boogie 295 into (2) 1x12 Mesa Rectocabs. Yes, the cab sims are off. Any help would be greatly appreciated!