Help w/Integrated Amp for JBL L112 Speakers


I have a pair of JBL L112 bookshelf speakers (fantastic condition) that I want to set up in my new office (carpeted; 13'x15'; 9' ceiling).

I plan to listen to rock/pop/jazz via CDs and iPod/MP3's - not necessarily loud; quality is more important. Don't require a tuner. Looking for a decent Integrated Amp in the $400-$500 range. Not replacing anything; this is a new setup.

I'm finding many new and used options: Rotel RA-05SE, Cambridge Azur 550A, Nakamichi TA-4A, NAD C316BEE, NAD C326BEE, and others. In many cases, I can't bring home the Amp to try it out first. I'm looking for your expert opinion on the best Int Amp for these speakers.... thoughts? (getting rid of the JBLs and spending more money aren't options).

Thanks for your help!
analyzr
Audio Refinement Complete is in that price range and will sound better than your options of integrated amps. A touch on the warmer side with enough guts to drive them well. I cannot speak about the Classe setup, but then that is a seaparate component kit.
Someone recommended going with a Rotel RX-1050 or 1052. What are your thoughts on that compared to the other units mentioned above? I understand it's a receiver but he seemed to think the 1050/1052 outperforms many int amps. Thanks.