Originally Posted by runnin'
I'm not sure I understand, are you claiming that you've worked full time for the last 15 years in "audio testing" ? What exactly is that, what does the day entail for one who tests audio all day long? And saying that the majority of sound differences in amps always go away, what meaning are you trying to convey there, it sounds kind of clumsy.
Speaking of clumsy, read your own post. Even after edits, it's rather rough, wouldn't you say?
I worked for a company that designed, manufactured, and sold audio-video consumer electronics. I was responsible for designing and testing some of the circuitry, including the audio circuitry. Yes, I spent years doing audio parametric testing to validate my designs. It entails using an Audio Precision to test parametrics such as frequency response, THD, IMD, SNR, dynamic range, etc.
As for my comment about differences going away, I was implying that those differences exist in the head of the listener, either because of psychological biases (conscious or unconscious) or because of improper testing methodologies (not level-matching and not quick-switching).