Hello Xavierzx11,
I've owned the M-20's and found the entire Revel line that you own to be a very difficult load to drive. I would agree with Ksales about the Proceed HPA-2 & '3 or the Bryston high-powered 2 & 3 ch amps. I would consider nothing under 200 wpc and preferably a high current amp. I had a Krell KAV-500 with my M-20s and the amp just could not handle the speakers at higher output levels. The soundstage would just collapsed. I moved up to the Plinius SA-250 MkIV and the amp took command. I know the Plinius may not be what you are looking for and it would be pretty hard to find a 3 ch match for it but that's what I chose. There are many excellent amps out there, you should be able to find just the amp you want, need and love. Good luck and happy hunting......John