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How to Preserve New Shiny Banana Speaker Ends?

I've had the Nordost Blue Heaven speaker cables for more than 5 years now and the banana plugs have lost their shimmering gold finish. I have never cleaned those plugs within these years but just lately bought some Progold cleaners hoping to bring back the glitter but alas...I realized it's too late as oxidation has taken its course. The previously golden plugs now looked a bit black and don't look too good although soundwise is not an issue.

Since I've recently bought a brand new pair of SPM speaker cables, I am hoping to preserve the banana ends to their sparkling gold condition as long as I possibly can. Will cleaning the plugs periodically, say once a month work? I just hate to see them turn black.

Your opinions are much appreciated. Thanks in advance.
ryder
aball
2,018 posts
 
Well, if losing the gold plate bothers you, just get some MIT cables. :)

Arthur
markphd
667 posts
 
Newbee has it right in my view. Gold does not oxidize; that's one of the reasons why it's used, that plus its' conductivity. If it's darkening, it could be a build up of some of gunk which can be cleaned off with something like Caig Progold. Otherwise, the gold plating has simply worn off. As you probably know, one of gold's other characteristics is that it is very malleable. It can be stretched very thin. Some gold plating is only a few atoms thick!
ryder OP
1,697 posts
 
Thanks for responses. Yes gold is an element that doesn't oxidize but I have the impression that the plugs must be metal or something, and the gold is just coated on it. Just checked on the specs of Nordost Z plugs(for the 1st time in 5 years since I first used them), and those plugs are berrylium copper, gold plated. I believe the gold has worn off slightly, revealing the copper beneath. There is just no way to preserve the gold finish from wearing off due to friction of frequent plugging/unplugging those plugs isn't it? Hmmm guess Aball's recommendation of getting some MIT cables may worth considering!
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