Best Cheap Amps for Magneplanar Speakers

At one point in time (5 years ago or so) I used a pair of the Wired4Sound SX1000R monoblocks with my Maggie 1.6's with good success. I also believe that the CIAudio would work well since I owned them also. I only suggest this to you because I'm trying to hold the cost down, especially if you can find them on the used market.
I do like several of the other options that others have mentioned.

Was driving my 1.7s with an Acurus A150 until last night when my used Bryston 4b arrived. Clear upgrade in the bass dept and the immediate response. Highly recommend Bryston. If you want monos then get 2 and bridge them. Tube preamp really finishes the package.

Yes Bryston 4B is a great match

(((If you want monos then get 2 and bridge them. Tube preamp really finishes the package. ))) As if

except bridging can suffer into low imp loads like a 3,7
 where a stereo 4B or 7B mono's works great.
                  Best JohnnyR