BC, the 2400 is a quite powerful THX certified receiver which should work well with the M80s and of course has the significant advantage over the Outlaws of the YPAO automatic room and speaker equalization. Also, don't worry about "hearing" the 2400; if it's powering a system several things will be affecting the sound, but the receiver won't be one of them, except to the extent that if YPAO was run its equalization would affect matters.

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Enjoy the music, not the equipment.