uHmm, interesting I wondered of this my self, what can be the difference between two amps in the same category? I mean like you said there just suppose to amplify the signal, so the more accurately its amplified the better the amp? Although I read somewhere that a better amp in the same league should be able give you the suggested or tested amount of power consistently, but amplifiers like that can do that cost about 2k so I guess the ones that can moderately put out continuous rated power are the better amps?