Originally Posted by commsysman
As for those who say that amplifiers all sound pretty much the same, I been there and heard them and proved that it is absolutely not true to my complete satisfaction.
It's difficult to say what you did or didn't hear, but I suspect you didn't use anything close to controlled conditions.
But here's something I do
know: Perception bias (however innocently arrived at) is a documented fact, and anyone doing legitimate research goes to great lengths to control for it (such as double-blind methodologies, control groups, placebos ... even misinformation as to what is actually being studied). Perception bias is a big deal
. In the case of modern amplifiers -- where we know that variations in frequency response, distortion and noise are extremely slight and beneath the thresholds of audibility -- statements to the effect of "I heard it (as did the wife, the neighbors and the dog)" in the context of sighted listening are essentially useless and should be dismissed out of hand.
You can hammer those kinds of statements all you want, but they do not hold up
, not to anyone with a basic level of methodological training (which, however grudgingly, I happen to have, as do others here).EDIT:
One more thing. It's perfectly OK for people to believe whatever they want, but to come here and spread audio mythology to complete strangers trying to make real purchasing decisions is just ... I dunno ... misguided. More like unethical. So, if this guy isn't overdriving his existing amp, there's zero objective evidence that he'd realize any benefit by switching to something else. On the other hand, equalization settings? Maybe. Room treatments? Probably. Speakers? Possibly. But the amp? Extremely unlikely.