while I agree with tantejuut in principle, practically, in audio, the lack of proper impedance control (RCA or XLR), and the limited bandwidth of the connected digital circuits is going to make any bandwidth issues between copper and silver inconsequential, i.e. the circuits can't take advantage of any potential bandwidth improvements of the silver (that could be replicated with a different copper construction in most cases). Due to that skin effect, there is virtually no benefit to pure silver, as plated silver would provide all the high frequency benefits.
