I love the tone I get with my little old MicroBass combo. So much so that I would like to try to get that going in my bigger rig. I am way behind the curve on GK stuff these days. Does that sound come though in the Fusion for example? Will I be better off going with an older model? Do not need a biamp capability. should I stay away from the tube stuff? I want to tighten up the extreme lows from the B string specifically, and have more power than my Walkabout head can dish out.