I thought the issue was impedance.
The Maggies dip pretty low and the Atma amps like to see higher. I did hear a rig that used Z Transformers (the anti-cables guy) between Atma-Sphere and Maggies and it sounded great.
Best talk to Ralph.
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?