a few year back when I had my M80Ti and a Denon 3805 and a RS Sound Level meter I hit stupid crazy level of 116db in my 12x 17x8 room. Just to see how loud and a that I din't have the volume knob at full. I think the Denon 3805 is rated 120w 8ohm and 160w 4 ohm.
so 200w wouldn't get any louder, if and why you want it this loud is beyond me.;)
but, if you need it this loud, then as mentioned ^^^^ get a pair of Paraline's and a Paraline subs. these speakers are built for this and I have a set in my muusic room and they are wicked wicked clarity and volume.
http://www.yorkville.com/
