Adcom would be my choice.
http://www.adcom.com/amplifiers/gfa5503.htm
Specifications
GFA-5503
Number of channels 3
Watts per channel into 8 ohms 200
Watts per channel into 4 ohms 350
Bridged power @ 8 ohms n/a
Rated THD 0.018%
THD + noise at full power into 8ohms/4ohms typical
20Hz 0.018% / 0.018%
1kHz 0.020% / 0.020%
20kHz 0.130% / 0.160%
Input required for 1 watt output 0.1 volt
Input required for rated output 1.4 volts
Dynamic headroom into 4 ohms 1.7dB
IM distortion CCIF full power any combination 4kHz to 20kHz <0.035%
Frequency Response 20Hz to 20kHZ +0, -0.25dB
Power bandwidth (-3dB) 3Hz to 130kHz
Gain 29dB
Input impedance: Unbalanced 49.9k ohms
Input impedence: Balanced n/a
Signal to noise ratio "A" weighted at rated power into 8 ohms >100dB
Power consumption
(all channels driven)
Quiescent 199VA
Maximum 1440VA
Dimensions (inches) HxWxD
Chassis 7 x 17 x 16
Maximum 7 x 17 x 16
Weight (lbs)
Net 57
Packed 63
$1699.95 with free shipping from an authorized dealer. I have purchased from here before. Very good site.
http://www.wildwestelectronics.net/gfa-5503.html