Best Amplifier or Integrated for Focal Diablo Evo

Wondering what you would power the Diablo Evos with?  
Room is 13x30; the speakers would be on the long wall and in a 8'-9' triangle.  
Cables will likely be Nordost. 
Aurender or Lumin will be the source. 
I'm thinking Constellation (but I like a slight touch of warmth, so...not sure if that's a hit)
Simaudio 700i
...What do you think? 
I thought about it.  I’ve heard the 300 is amazing, but leans a bit dark in color pallet.  It’s not off the radar, but I can’t hear it locally, and I’ve never heard it.  Thanks!