All...thought I'd report back with an update. So I picked up a restored/upgraded Krell KAV-300i integrated locally for a great price. I love it. Only about an hour into listening and so far I believe that this amp is perhaps bringing out more detail, or at the very least just sounds all around better. The soundstage seems larger and there seems to be more overall clarity. I'm surprised at the low end output as well, this thing plays with authority, in fact not sure I'm even going to use a sub with these SF's now. Really what it comes down to I think is synergy, that's the best way I can describe it. The Krell is definitely a good fit with the Sonus Fabers.
One caveat to this, I'm also using a different DAC. With the Emotiva I was using the preamp's built in DAC, but since the Krell does not have one I'm using an Arcam irDAC, 1st gen.