Can anyone compare the Phoenix Gold Xenon line (a class D amp) to a good A/B amp? Nothing major like a good DLS, but maybe to an Xtant or lower end Arc Audio? I'm just wondering if I should pick up a second A/B to run my comps active or just go with the X200.2 and run passive. The Xenon is supposed to have low distortion, but does the A/B sound better for some other reason?