I own the 532H. It was annoying with high level connection to subwoofers, always popping and going in to protection mode. Other than that I appreciate the woofer control, the large & slightly laid back soundstage and very even-sounding bandwidth. I use it with JBLs, so a bit of hand-in-glove scenario. I have compared with other amps but not of both similar power and price. That said, it is a lot of amp for not much on the current market. The whole design, including the modularity and basic chassis communicates more of a work horse than a prize, but I think that sells it short. My main advice is do not over tighten the binding posts. People break them. Not me...other people ;)