Oh jolly! this fantastic. There is now bottom end that does not make the sound flubby, it is tactile but also audible - at least at 100+ DBs (getting so much closer to the feel of a real amp); I love it! I play live, so my set-up is Axe FX III to two Friedman ASC-12s through output 1, and to PA through output 2 (as copy of O1).
Thanks Cliff! You are an amazing engineer; you took the challenge of the AIR problem, re-conceptualized what the issue is and it does seem like you have figured it out (or are quite close - you only know this; don't want to speculate too much).