With its ability to amplify music signals, audiophiles will appreciate the warm and rich tones it produces. Tv7 tested TUBES. 90 % of our tubes are Tv7 tested. Tube testers do not test for these problems in the manner in which you think, except to the extent that a tube tester with sensitive leakage detection will find far more “noisy” tubes than a tube tester with only “fair” leakage sensitivity, to the extent that the noise is due to this problem.
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