I too think the Naim 5i would be a fantastic match, another would be the Bryston. I lived with SFs for about 7 years, 2 of that with the concertos. I had a Bryston 3BST and the BP-25, which was a good match too.
Integrated or Receiver for Sonus Faber Concertos
I'm building a small, easy to operate system for an octogenarian. The speaker part of the system consists of a pair of Sonus Faber Concerto Home speakers (on stands) and an REL Storm III sub. I'm looking for an easy to operate, reasonably priced integrated or receiver to power the rig. I'd also be open to an all-in-one (FM tuner, CDP)unit. Any ideas, experience out there? Thanks in advance for your help!