Go test them before you turn on the amp.
make sure it close in reading , if don’t have tester just buy new one .
black or dark round is mean used lot , shiny is new look.
better buy match tubes .
Genelex Gold Lion KT 88 “burn circles”?
Does anyone know why I bought an amplifier with these tubes, only two of them and there are these black circles on the outside glass of the tube. I don’t know if they’re good or bad and does anyone know if I need to have a matching family quad of KT 88 from Gold Lion or can I add another pair to these brown spotted ones? I see two more brown spotted ones from the UK for sale and I wonder if I should get them to match? Not knowing how old the others that I have obtained on my CARY SLI 80 signature amp. It would be an expensive mistake to buy two more of the same tube. If they are supposed to be bought in a quad, and I do not know the age, hours, on the two Gold Lions that came with the amp which are said to be rare?
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- 12 posts total
- 12 posts total