I think you're on to a winner. The amp' s those put out will be more important than watts.
ATMA-SPHERE MA-1 MK11.3 with magnepans, am I completely mad?!
I have a pair of magnepan 20.1, which I run active. I user a pair of 600w amps on the bass panels and then I use 80w KT88 monos on the mid-bass + tweeters.
I am considering buying a pair ATMA-SPHERE MA-1 MK11.3 silver edition in lieu of the KT88 monos.
The maggies are a 4 ohm load and I believe that they are a pretty "flat" 4 ohm and don't dip below that.
The ATMA-SPHERE MA-1 MK11.3 are 140w so I think they could be a winning match, but what do you think?