I disagree. You are comparing reproduction of sound with production of color. The right analogy would be either comparing production of both, thus asking "is this sound perfect", listening to a musician, or comparing reproduction of both, thus asking "are these two blue the same ?"
The problem of sound reproduction is completely technical. There are just two major difficulties : first, the means required to perform accurate sound reproduction are far beyond the normal use of a home stereo system, and include room acoustics and must take into account the listener's position.
2-channels stereo implies that the listener is sitting still. If the listener moves, we need multitrack recording, one speaker per original instrument, that move exactly like the original (e.g. the speaker playing an opera singer will have to walk and rotate exactly like the singer did during the recording) plus extra speakers to simulate exactly the reverberation of the recording location.
Second, since the late 70s, a new paradigm has shifted the home high fidelity from the professionnal one (used in theatres, for example) : measurments have no correlation with listening experience. This paradigm have vastly hindered the development of consumer hifi. Now, we can see that much more effort are put into power cables than into, say, equalisation.
I am asserting that, given the perfect sound reproduction device that fully satisfies all your technical challenges, different people will still judge "good sound" differently. Taste is subjective. I can describe, in a very well-specified way, what tastes good to me....but I would be arrogant to assume that it must "taste" good to you as well.
I used color perception as an example because it is a well-known philosophical dilemma, that cuts straight to the issues. For example, see here (Univ. of Waterloo Philosophy). Perception of color differs from perception of sound only in biological implementation.
That said, I was hoping to submit an orthogonal (and hopefully useful) thought to a thread that was beating about more of the same. But I don't enjoy philosophy when I cannot see my opponent and share a good glass of something intoxicating