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In Reply to: RE: hum from new tube posted by scruffy_ on February 07, 2017 at 14:46:30
My personal preference is to avoid a hum or noise maker except for some microphonia when tapped. I fear it is a harbinger of creating another problem. Is there any other remedy in terms of return etc. If not can you get another pair. Do you only want RCA JAN VT-231 6SN7GTs? Are they grey, graphite or clear glass?
I fixed the problem by using super-fine sandpaper on the contact pins and tapping the tube with a pencil.
I did want the RCAs because they are great for vocals. They are gray.
"Humility is the true mark of genius. Just get used to it."
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