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168 Posts
I think this is right section to ask, but just noticed (after being boxed for about a year) when I turn on my amp I here what sounds like the tubes making a ding sound. Sorta like they are warming up. It goes on when I turn off them off too. I decided to look at them and noticed one of the 6L6's has slight blue and the other does not. Using a 6505+ combo.