I'd give a good hard look at this:

http://www.nadelectronics.com/hifi_r...EE_framset.htm

It's nominally rated lower in power than what you've specified, but don't
let that concern you. NAD has always been very conservative when rating
their power amps, and have an outstanding reputation for considerable
headroom in their amplifiers, which is really what defines an amplifier's
ability to deliver musical dynamic peaks without clipping. I currently own
two NAD component power amps as well as an NAD preamp/tuner, used for
various satellites around the house and for a system in my home office. My
main system in my living room is powered by a Yamaha DSP-A1 AV integrated
amplifier. NAD has always produced high quality audio components that are
short on frivolous features and long on value and performance. Serious
stuff, not a toy, and you won't find it at your local Best Buy or Circuit
City.

To find what you're looking for, you really need to spend some time in a
good high-end audio store, which are getting hard to find all the time.
There are other manufactures out there that stil produce this kind of stuff,
but I believe I'd start with an NAD dealer, and get his thoughts.