I'm looking at a Orion 600D which puts out 200x1 @ 4ohms 400x1@ 2ohms and 600x1 @ 1ohm. they say that it'll hit 1200 watts at full power. I'll be using it to run 2 Boston G512Rs dual 4ohm which are rated at 450 watts RMS each. My question is first, is this a good quality amp and secondly will it provide enough clean power to my subs