Can't comment on the sound, as mentioned you should form your own opinion on this first, but the Bel Cantos will drive nails and never get hot so I would think they would serve the Magnepans reputedly difficult load fairly easily. I have the 300's and the 1000's in my system, the 300's drive my center and rears. Overall they are very close, but the power difference exposes itself in bass extension and drive, and overall dynamics. If you like the 300's then you would love the 1000's.
