X-a1 Driving Magneplanar MMG?

I have heard from some people that you dont need a super powerful amp with the MMG's. MY amp is rated 100w @ 4 ohms, so will it work until i can replace the amp with a more-powerful one?
I forgot to note that my room is small 12X13
On one of my systems I have an Adcom 535II (60W into 8ohm - 100W into 4 ohm) and it pushes Magneplanar .6 nicely in a larger room than yours. I also use biwire Kimber 8TC cable for this combination.