I believe some cables show a difference. I’ve had blind (but not double blind) tests between Wireworld and Mogami.
My guests were able to hear the difference I did but we completely disagreed as to which was better.
Value of cable difference to me? Maybe $30. Actual costs difference: $300.
I could explain everything I heard by assuming WW had more capacitance and my amp at the time had more impedance than I expected. Nothing there required an explanation of the overlap of Maxwell's equations and the great pyramid of Giza.
I have never bought expensive speaker cables since then.
My guests were able to hear the difference I did but we completely disagreed as to which was better.
Value of cable difference to me? Maybe $30. Actual costs difference: $300.
I could explain everything I heard by assuming WW had more capacitance and my amp at the time had more impedance than I expected. Nothing there required an explanation of the overlap of Maxwell's equations and the great pyramid of Giza.
I have never bought expensive speaker cables since then.