ProSound amps (Crown,etc) were suggested by Gmood1, and it is true that they are generally designed to function with low impedance loads, and include self-protection features if you abuse them too much. However, I note that their distortion specs (for some of the latest models, quite respectable into 8 and 4 ohms) increase greatly with low impedance loading. Is this also true of the audiophile amps mentioned above?