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scanning E*ay adds for various electronic items.
While looking at the adds for parts, tubes etc, I came across a listing for two Genalex Gold Lion KT88's, used. The picture of the tubes showed a brown area around the getter flash.
Unless, I'm mistaken, that brown cast is an indication of the tubes were "red plating" or just plain "spent". I have an old Pilot stereo amp that uses EL34's. It's 60+YO and they have that same brown cast and I figured that they're way past their prime.
Any opinions?
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