This may be a job for @agedhorse ... my current go-to rig is a D-800+ and either one or two Subway 112 cabinets depending on the room. I'm expecting to receive a Line6 HX Stomp on Monday, so here's what I'm puzzling over... What combinations of settings on amp and cabinet get me closest to actual flat response to use as a platform for modeling? I know I'm trying to take out all the yummy baked-in Mesa goodness, but I'm willing to experiment with it with the goal of increasing the flexibility of tones that I have available. If the answer is "Set everything at 12:00 and let 'er rip" then that's fine, but I'm thinking that there may be some adjustment needed to compensate for baked in tone. Thoughts?