I'm sorry, but I think that cable break-in is the most egregious example of snake oil salemanship in audio. I can't believe otherwise rational people would consider spending $1000 or more on a device that does ABSOLUTELY NOTHING!!!
That said, the one cable related factor that can benefit from burn-in is the actual physical connection of the cable jack to its plug or speaker wire to connector. Sometimes it may take a while for the connection to settle into its lowest impedance.
That said, the one cable related factor that can benefit from burn-in is the actual physical connection of the cable jack to its plug or speaker wire to connector. Sometimes it may take a while for the connection to settle into its lowest impedance.