To add to @atmasphere post above, there are Class D amps that will drive the Maggies and have a very nice tube like sound. I am referring to the Atmasphere Class D amps. I own a pair (Very reasonably priced even new) and they have almost all of the magic of my 45 SET amp. I am fortunate enough to be driving 106 dB sen. speakers, so about any amp works for my set-up. However, I have an awful room as it is a living room, dining room, kitchen area combined and space is 32' x 28' x 14'. When I am entertaining and need a bit more volume, the Class D substitute VERY nicely. I would not hesitate to recommend a pair. I have not heard them with the Maggies, but believe it would be a great sounding set up.
I occasionally see a pair on sale used, but probably because they sound so good, not very often.