Amp Recommendations

Hey everyone, 
I have been upgrading my home system, but then moved due to a new house for work. The power amp was the last one to be updated. After 3 Monoprice amps, instead of getting another warranty replacement, I decided to return and upgrade in the process. So needless to say, I need a new power amp to use for my set-up. I would prefer to stay around $5k or so, but flexible as needed and looking at both new and used. Room is a split use 70/30 music/movies that measures 14'x20' with vaulted ceilings (peaks around 14'), but opens to the kitchen/dining room behind which is another 11' deep. I had a 5.2.2 system at the old house and will probably do the same here, but will at least start with the 2.2 and go from there until I have time to get set-up and play with the set-up.

Speakers: Sonus Faber Serafino Tradition

Processor: Anthem AVM 70 8k