I don't want to beat a dead horse but I'm bugged.

I've listened to a lot of amps on a lot of different systems, and I would say that specs are probably less correlated with sound in the case of an amp than they are with virtually any other component on the system.

If someone put a gun to my head and said I had to pick a spec for an amp and make a purchase on that spec alone, I'd want to know its weight. That doesn't tell you a lot about it sound, but it tells you more than just about anything else you could name.

I just bought an amp here on Audiogon, and I couldn't tell you its power rating without googling it.

@rudyb 

You can't compare the frequency response of a headphone to speakers.

This is not magic nor am I trying to insist my reference for sound quality is an objective reference. I am very mindful of my own unique sensory perception, biases, preferences, and I allow others those same considerations. I simply don't understand why some have need to assign some reference sound quality based on present rather primitive measurement regime. Again, this is symptom of inherent authoritarian mindset.

I posted all reference to experiments that proved that Fourier transform cannot explain the hearing process which is non linear...

Many dac technology are based on this flawed assumptions ...

But deludedaudiophile never answered...

This is not magic nor am I trying to insist my reference for sound quality is an objective reference. I am very mindful of my own unique sensory perception, biases, preferences, and I allow others those same considerations. I simply don’t understand why some have need to assign some reference sound quality based on present rather primitive measurement regime. Again, this is symptom of inherent authoritarian mindset.

I simply don't understand why some have need to assign some reference sound quality based on present rather primitive measurement regime.

When I look at the measurement regimen for electrical products, for audio, it is not something I would call primitive. THD and SINAD tests from mW to 100's of watts at multiple frequencies in the audible range. IMD tests with 32 tones across multiple frequencies from low to high. Instruments that have noise and distortion 120db below signal levels. What is primitive about this?  In my response to @realworldaudio , his impression, and possibly yours is based on perhaps not understanding the measurements.  What is missing is how a particular speaker responds to a particular amplifier, but that is a system issue, and would appear to to be more relevant to certain amplifiers such as tube amplifiers, with high output resistance.

I personally am quite impressed with the technology of the Klippel speaker measurement system. There is nothing primitive about that. I see tests also include distortion at several volume levels, and impulse responses. I expect someone skilled can understand a lot about how that speaker will sound and how it would interact with a room and how it would respond to being turned up.

I think what irks some audiophiles is that sites like ASR declare that some equipment will sound the same, or that some equipment, will make no audible difference. I see that statement made with amplifiers, but it always has qualifications. I my mind there has not been anything convincing that proves them wrong.