From the point of view of physics - yes, any wire is ELECTRICALLY symmetric.
From a point of physics, you are absolutely wrong. Every manufactured wire is inherently asymmetric because no wire lacks manufacturing imperfections.
In any case, no one has yet refuted the example of the absence of an error when it is amplified by 1000 times in RIAA corrector.
However, there is a difference by ear. This is actually the question - what is the component that does not relate to electricity, but is felt subjectively?
What are you talking about? Linear amplification, as I stated before, does not amplify the relative error. If there was 0.1% distortion before amplification, and you amplify it by 1000, there is still 0.1% distortion. The frequency response before amplification will still be the same after amplification. The SNR will be the same before and after. In all cases, if anything is added, it is due to a defect in the amplification.
No offence, but it is obvious you don’t have the technical background to make the statements you are making. Perhaps it would be better to ask questions and learn more.
However, there is a difference by ear. This is actually the question - what is the component that does not relate to electricity, but is felt subjectively?
WHAT IT LOOKS LIKE! That is the only difference. The sound is exactly the same. However, because you know what it is, that influences your subjective opinion. That is why tests for actual sound quality must be done blind.
-- Side note, directional arrows are generally on ICs as the connection of the shield definitely matters. If it is on anything else, it is to make a certain group of people more susceptible to a high price.