Anyone needing a rationale for experimenting with new cables in their system and/or feeling dissuaded by the Church of Denyin'tology's antiquated electrical doctrines: take heart!
Many new electrical facts have been established in the past 100 years, that support audible differences, between various cables, etc.
I couldn't find anything like, "Updated Electrical Theory For Idiots", but- did manage to find something resembling a cartoon, that even a child could follow. It neither mentions AC/sinusoidal waves in wires, nor does it go into the photon propagation of electromagnetic waves. It does, however, emphasize/demonstrate how Electrical Theory has progressed, since the 1800s: https://www.youtube.com/watch?v=KGJqykotjog
The following presupposes a certain amount of knowledge, in the field of modern Electrical Theory. Click, "more" in the first link's first answer, to get it's entirety. Note how it mentions the OLD, "... commonly held misconception that the flow of electricity through a wire resembles a tube filled with ping pong balls...", to which most Denyin'tologists fervently adhere:
https://www.quora.com/Are-photons-involved-in-all-forms-of-electricity-for-example-when-it-flows-through-wires?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa
and:
https://van.physics.illinois.edu/ask/listing/2348
It's an established (measured) fact that an electromagnetic wave's propagation and speed, are dependent on the materials of which the transmission line (cable) are made (ie: Dielectric Constant/permittivity). The better (lower) the Dielectric Constant the better the flow and the longer it takes for that material, to become polarized. One reason anything that comprises an RLC circuit (ie: capacitors, cables, PC boards), takes time to, "form" or, "break/burn-in".*
*Something that makes the Denyin'tologists apoplectic.
https://resources.pcb.cadence.com/blog/2019-dielectric-constant-of-pcb-substrate-
materials-and-signal-integrity
and (note: frequency figures in EVERY equation and our typical music signal is comprised of a VERY complex mix of information/frequencies, potentially lending to multiple time smears, if not handled correctly):
https://unlcms.unl.edu/cas/physics/tsymbal/teaching/EM-914/section5-Guided_Waves.pdf
Even the most inane (regarding the Sciences) must admit; braiding and twisting wires eliminates/reduces EMI interference.
That, of a necessity, lends credence to various cable geometries.
That better dielectrics enhance the propagation of electromagnetic waves (ie: your music signal), lends the same credence to choosing cables with better materials (ie: Polypropylene, Teflon, air, etc).
Of course: anything the Church of Denyin'tology's popes can't fathom, they'll summarily dismiss (uneducated twits that they are).
I'd recommend buying a sound volume meter, and matching the output to at least half a decibel at a fixed frequency, let's say 1 KHz, before making any comparisons.
Youtube has plenty of suitable test signals.
I (personally) know of no one that listens to test signals, via their home audio system and (as alluded to above*): there's MUCH MORE involved when attempting to reproduce the complexity of music in a reverberant environment (ie: various voices instrumental, vocal, their separation/placement and ambient information).
YES: the better part of the above is a copy/paste of a previous post.
FACTS have no expiration date!
Happy listening and (as Richard Feynman would often encourage): NEVER STOP LEARNING!
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