I wonder if a bad power tube (6550C) can ruin a power amp? I use a Sonic Frontier power 3 (about 6 month old) and I notice that one of the 6550C is very difficult to be biased. And the next thing I know it smokes and died.
Jab, Yes I do own these pairs and I sent one of them to the manufactory to be repair. I hope I can learn to repair it myself next time around (if it is only the resistor)- I am quite ok with solder. Thanks
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