I would consider a Parasound Halo A23 (A21 if you want/need more power), or with the sensitivity of those speaker maybe a tube amp such as a Prima Luna?
The Wyred for Sound are supposed to be great, I have not heard them personally, but everyone I know who hears them loves them.
Also, you may look at some of the previous generation Bel Canto amps, lots of power, smooth sound, and tons of operational flexibility.
good luck.