Peachtree + Era D5 .... to ..... KEF R11 + ?

Hi all,

Lurker here, but very interested in considerations this group can provide.

I currently have a very pleasant Peachtree nova + D5 speakers that I've been really happy with in my prior space. But we've recently moved and now I have a much larger open plan house that just isn't handled well by the D5's.

I've auditioned the KEF R7 and 11's, and am really fond of them. My question for this group:  I've really loved the Peachtree Nova, but I'd really like to have an amp/pre that was more iPhone app friendly to choose between sources, manage volume etc. from a stand-off. I've got a dumpy Marantz integrated that satisfies the iPhone requirement, but not the sound requirement.

I've had a look at the NAD options, and Cambridge. I'd really like to keep the amp selection under $2k if I can. What else is worth a look?

Thanks!
Chris