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I have to wonder if there are chassis that are really sensitive to tubes particularly in the IF now I have a zenith in v1 and a sylvania in v2 I have 5 lindal 6eh7 tubes only one of which I had tried but found that the zenith actually gave more then the lindal so I’m not sure if I may have all lousy tubes wish I could rule it out and not just believe the tube tester. I know lindal tubes they say are not good but I didn’t try the other 4 of them either.
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