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600a

  1. R

    Hickok 600a rectifier socket question

    Hello fine folks at AK. I read posts here from time to time but now have a question. I am an old guitar guy that employs tube amps exclusively. Picked up a hickok 600a and was hoping to use it. Someone had previously replaced the 5y3gt tube socket and they did a poor job of it. Well I put a new...
    • Reicksta
    • Thread
    • 600a rectfier tester hickok tube
    • Replies: 7
    • Forum: Tube Audio
  2. thorpej

    Hickok 600A settings for Russian 6Н1П (6N1P)?

    I have a bunch of 6Н1Пs that I'm going to be using for OTL headphone amps. I'd like to do a quick grading of them, and was planning to use the settings for 6BQ7A on my Hickok 600A, but would entertain any other settings advice.
  3. thorpej

    1625 settings for Hickok 600A

    This post is purely for posterity, in the hopes that the Great Index In The Sky will produce a meaningful result for the query "1625 settings Hickok 600A" in future generations. 1625: Fil. = 12.6, Selectors = JR-4036-0, Bias = 25, English = 85, Press = P4, Mutual Conductance = 3800, Cap = P...
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