I have a pair of Sylvania black plate EL84. Highly desirable El84 tubes. One tube is labelled Sylvania, the other RCA, but the latter is clearly Sylvania due to construction.
Here are test results, from a Hickock test:8750 @ 38 mA, passes life test
8500 @ 44 mA , passes life test
where 5650 is mimimum and 10,000 is considered new. Free ship via USPS first class.
I have 100% feedback under audiogon and ebay
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