Amp Suggestions for Harbeth C7es3


I have a pair of C7 pairing with Supernait. In my current room (8'x10' room with speakers placed against 10' side wall), the combination is a bit too expansive. I would appreciate some opinions if I were to change the amp to get a little more high frequence air and better sound stage and sound image definitions. I mostly listen to Classical and Jazz music, occasionally vocal and pop, thus I don't mind losing a bit bottom end punch, as long as the bass definition doesn't suffer. I am also not ready yet to jump to the tube camp yet. Any suggestion would be appreciated.

cheers
monoymono
ran the wonderful C7ES3 with rogue audio cronus magnum ii amplifier.  truly a captivating sound that is more pleasing than most regardless of price.  
Thanks Avanti and donjr- I've heard others like yourselves also wax enthusiasm about Cronus Mag/ C7 pairing. Im running a Shindo pre/phono in an all analog setup, so that's why I'm looking for a stand alone amp. I should correct my last post to Quicksilver Sixty Watt Mono or Mono 120, which after checking the QS site, were the two amps I have interest in. Price on the Sixty is $3K, the Mono 120's are 4K, and the Rogue Stereo 100 $3,500. I just finished listening and Love Over Gold was really impressive, but The Cars S/T and The Allman Bros debut no less fun. I'm really enthused about the C7's. Unusual to run a Full function pre in to a line input on a Croft phono integrated, but damned if it isn't enjoyable. The Croft is a 50 watt hybrid amp which uses a single 12AX7 driver. 
Mc452 with c52 great combo for these speakers!   Still very satisfied 2 years later!
I heard the MC 452 with the 40.2.... Really nice combo! It was a Mac preamp, just not sure which one.