Of the amps that I've owned and can recommend, I would rate them from best to worst:
1. California Audio Labs MCA 2500
2. EAD Powermaster 2000
3. McCormack DNA 500
4. Parasound 5250
5. sherbourne (I don't recall the model)
The McCormack may have been better then the EAD amp but I remember enjoying my system better with the EAD.
The CL-2500 MCA is a 5 channel amp (US$7,500) weighing a substantial 109 lbs, and is 27" deep.The amp operates in Class A to 50 watts, and is rated at 500watts/channel into 8 ohms, from 20 Hz - 40 kHz.