My question is how are you going to use a 3-channel amp for HT, you will need at least a 5 or 7 channel amp since a preamp does not amplify.

The m60's and m80's are similar to B&W 703's or better, or the Paradigm Studio lineup.

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85