While looking to buy speakers for my PC, I came across one that said that it used platinum plated connectors to shield from interference.
Is platinum better than gold for shielding wires / connectors?
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Gold and platinum are really used cause they're fancy, and in reality, there's no real practical difference. With gold, you might have a slight advantage with it being non reactive (until the plating wears off), but that thin, micron thick layer of precious metal isn't likely to have much more effect than the plain old thick layer of whatever metal they use.
Practically there's isn't any difference between various platings and materials in double blind testing. Go for whichever makes you happier.
References - from reasonably sensible sources, as opposed to purely audiophile sites
Elliot Sound Products - talks about cable materials, and the 'advantage' of gold plated connectors