Quote:
Originally Posted by Bombadil
I am not sure there is a problem. He wrote that all of his GL KT77 tubes showed a grid leakage on his tester. Perhaps it is just some quirk of that tube and his tester. These tubes are drawing raves from many quarters, with few problems as far as I can determine. So it seems odd that all 4 of his are showing the same problem, while all playing well in his amp.
So is it 1) all of his tubes are defective? 2) his tube tester readings on that tube are wrong? 3) his amp has somehow damaged those tubes?
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It's probably the tester. I think Dennis gets tubes from The Tube Store.