This my personal A800 I donated for testing. I've run mine against a Marantz SR4021, Crown XLS1000, Sony V333ES. All decent in their own regaurds but the A800 seems to have better damping factor which I think results in its good low end transience. The low end is powerful, tight, and accurate while the highs are crisp, clean, and detailed. Also seems to be dead quiet in dynamic music and when not playing music. Can't complain at $300, I feel behringer has made a good amp with a fair price. The Crown XLS1000 is probably very close in performnce, size, heat, weight and could be found cheaper if your willing to buy used. Id say if you cam swing an extra $30 just go for the XLS1002 overall its a better deal at $330.
I have a Crown CTs600, but the fans cooling I so irritated. And since it run 24V fans (2 pcs) it’s not just to switch with PC fans.