I use a Dremel rotary tool with a carbon steel wire wheel. DO NOT use a stainless steel wire wheel, it is too stiff and will leave scratch marks. I then follow up with SuperContact or similar contact cleaner. This process works great with AC plug prongs also.
Best way of removing rust from silver or other
I have a pair of Audioquest cables with silver banana plugs that have tarnished due to humidity and time. I wonder which is the best way of removing this tarning without damaging the plugs permanently....Btw, is this sort of tarnishing detrimental to sound or just something that is not aesthetically pleasant?