You're being serious?
You're saying that you can hear the difference between a SNR of 120dB vs 110dB, THD of 0.01% vs 0.001%, FR of 20Hz-20kHz +/- 0.0dB vs +/-0.1dB?
It's like being able to tell the difference between 1080p and 1081p resolution!
It's cool to see all these measurement numbers, but all these numbers are completely inaudible to humans so we cannot possibly hear the difference among any of these numbers. These days, these numbers are purely academic.
Do these numbers mean anything? Sure, it means that certain components are made with higher standards and specs and cost a lot more money. But bottom line, we still can't hear the difference among these great specs!
That's why Sound & Vision Magazine gets very lazy sometimes and don't even bother to post these numbers by simply stating that the measurements (SNR, THD, Crosstalk, FR) are "all within normal specs". You can also add Damping Factor and Slew Rate to the list of academic numbers.
This is what we call "Science" and human physiology.