I have a D Sonic m3a 1200s (class D) which I like a lot. It's just a a fancy I want to entertain and try something else but I didn't want to lose the bass and the control of what this amp provides so bi-amping seems like the way to go.
I wouldn't necessarily say I'm throwing parasound under the bus but i am familiar with that amp and not necessarily smitten. Also I am a firm believer in class D especially newer GanFet ones but they are few and far between and currently not many in the used market. Never owned a pure class A so that's why I'd like to see what' the fuss is about.