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Spica Spica is offline
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Default Worn Tubes?

Hi all. I have a pair of RCA VT 229's that although I was assured that they measure
strong (gas, mutualconductance etc.), the black plates appear to be somewhat
stripped rather than smooth. Also, one of the tubes has a halo appearance in
the flash.

Would I be playing with fire installing these in my power amp? I fear a potential
breakdown under load in a circuit. Thanks in advance.

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