Originally Posted by b4z
How can all amps sound the same?
There are too many variables.
I can tell you that my 1980 carver M400 amp makes putt-putting noises and has a low s/n ratio. My NAD 3020 walks all over it.
Hook that carver M400 up to ultra efficient klipsch Heresey's and the hiss from the horn overpowers the music.
I hooked up 4 advent 1s to my Pioneer SX780 receiver in 1980 and heard audible buzzing with volume turned all the way down.
i know, iknow somebodies going to say the Pioneer receiver was being operated outside of it's impedence capability, but a well designed high current amp that can handle 2ohm loads is going to have qualities that the barely capable 4ohm amp will never possess.
You are missing a very important part.
"All other things, being equal"
The question isn't if some amps are better suited or able to drive certain kinds of speakers/loads.
Anyone with a just a passing acquaintance with the basics of electrical engineering can tell you that there are substantial differences in the ability of amps to handle different speakers/loads.
The question is IF you take a set of speakers that both amps can drive.
IF you then match the volume levels, so you aren't getting different loudnesses and one amp isn't clipping while the other is not.
IF you then conduct a double blind randomized test to eliminate pattern sequences and "hints" the test administrator might be accidentally giving.
I'm probably forgetting or overlooking possible factors, but this is the general idea.
IF you do all this, can most people tell the differences between the two amps? Will all the flowery language about one or the other being "Airy", "Transparent", "Tight", "Harsh", etc... go away.
That IS the question.
You can always "Break" a comparison if you crock things sufficiently to the advantage of one or the other. Any idiot can do that.