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Audiophile Cables: Opinions on value. Myth?
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been in the hobby for 30+ years.
cables will change the sound of a system given there is enough accuracy & resolution, to begin with in that system, to discern the differences.
the vast majority of the cause is noise.
noise comes from EMI ( electromagnetic interference) in the radio frequency spectrum.
cables act like antenna, pulling in unwanted frequencies that will effect the sound.
this can also be generated by any external source that affects an electrical circuit by way of induction, electrostatic coupling, or conduction.
transformers (like the typical torroidal commonly found in audio equipment) are known to generate this type of noise.
there is also noise in the the power line.
a good cable can filter some of this noise (common mode rejection).
this why some good quality power cables can make a system sound different, even when nothing in done to treat the mains power from the service panel of the building.