Do Cables Wear Out?

Kenyonbm - thank you for your research and references - I will stand corrected on the silver oxide issue. I apologize to you for any terseness directed at you on my part in this thread as I felt like I was under attack for my input and comments relative to the subject at hand. I was trying to make the point that copper oxide, while not ever reaching 100% in an older cable, does have some significant deterioration of electrical characteristics, which are certainly audible. I also use a contact enhancer on all connections (Quicksilver gold), but more as a buffer to counteract the audible effects of dissimilar metals (silver RCA's to copper jacks or rhodium plate wall plug to copper outlet). In addition, I clean all the connections in the system twice a year with Kontak cleaner, just part of routine system housekeeping.

Jwpstayman, you are very gracious. It is understandable that you felt under attack. I am sorry if I contributed to that feeling.
I am truely pleased that you found the reference useful.

I was trying to make the point that copper oxide, while not ever reaching 100% in an older cable, does have some significant deterioration of electrical characteristics, which are certainly audible.

But you still haven't told us *how much* deterioration, despite repeated requests that you supply this information. Do you not know? Because if you don't, your assertion that the deterioration is audible doesn't hold up.

Thank you Kenyonbm
  , the clear info is much appreciated.

Yes, Kenyonbm thank you for that informative display, it is greatly appreciated by most everyone I believe.