nice system; we have similar tastes; I heard your speakers at Pearl Audio in Portland, and was floored by the giant sound and room filling energy they produced; I was on the fence about the 20's or the next size up, the Cf30's; I decided to go for the floorstanders due to room size;
I have a Pass INT-250 with a Chord Dac; Also IsoTek products;
Playing around with subs, dual JL E-112; I'm not super in-love with the JL's-- been struggling to get them to seamlessly integrate;
How are you integrating the SUB 6...line level or high level?