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Weird tube noise...

from my 12AU7 tube. When I finished building Transcendent Sound Masterpiece 300 preamp, I had a scratchy type of noise from the right channel it sound like a bad pot and only made the noise when I turn up or down the volume, other than that it was dead quiet. So I lived with it until that same tube started to become noisy, I then switched it to the left channel and that weird noise followed the tube.

So I thought the whole time it was a defective pot (TKD) and was kind of pissed cause those pots are not cheap. I put in new 12AU7's (same brand) and its all quiet now no matter if I turn up or down the volume. I never had that happen before with tubes.



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Topic - Weird tube noise... - Cougar 18:45:57 05/26/23 (7)

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