taras22,
And surely you have ample measurements to absolutely and fully prove all those assertions beyond the shadow of any doubt. Or are we going to have to trust hearsay based on information drawn from listening experiences using your, uhhhh, ears ?
Which is, as usual, drawn from a mischaracterization of my arguments.
I have been voicing reasons for skepticism when it comes to *controversial* claims about audibility - controversial in the sense they do not form a part of generally accepted, well established phenomena. Claims that remain controversial among the relevant experts (e.g. I've seen many EEs say why the technical claims made by audiophiles or expensive cable companies are nonsense), and where the explanations are dubious, and the evidence almost purely anecdotal.
Claims like cable burn-in, and even the purported sonic advantages often claimed by manufacturers and users of expensive cables, fall in to that category.
That's different from the gross differences in sound well known to be audible, credible both in terms of technical explanation, what we know of human hearing, and what is reliable via our experience.
So, for instance, the audibility of sonic difference between various musical instruments would easily fall in to those categories. The harmonic/distortion profiles of different instruments is measurable, and falls well within the realm understood as audible to humans. And we reliably detect these differences all the time.
There will be gross physical, audible differences in the audio profile produced by, say, a Fender bass vs an acoustic stand up bass.
It's not remotely controversial that we can capture and reproduce these audible differences in the recording/playback system. Nobody is mistaking Paul Chambers' double bass at the beginning of Kind Of Blue for Geddy Lee playing his electric Rickenbacker bass, and for good reasons.
That goes for a whole host of audible characteristics that occur between different bass instruments, the way they are played, the audible effects of how they were recorded, placed in the soundstage, eq'd, mastered, etc. All of those differentiating factors exist well within non-controversial, known realms of audibility.
Then there are all the audible influences that can be measured in terms of eq, room effects that cause "bloat" or "overhang," and various measurable phenomena that can interfere with bass signals, produce the subjective perception of homogenizing bass - "one note bass" - etc.
These are all within the realm of what we know to be audible artifacts.
THEREFORE we have an entirely plausible case to stand on when we are discerning between different instruments on a playback system, between different bass instruments, between bass instruments recorded differently, between the qualities we can describe etc.
So...no...your "gotcha" relies on a naive look at the problem, not on some internal contradiction or fault in what I've been writing on here.