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phono tubes

  1. T

    Brimar CV4035 and Fisher 400

    Hi. I am having difficulty finding Brimar CV4035 tubes that work well with my Fisher 400 (late series), specifically the phono stage. I have purchased 4 NOS tubes, a set of two each from two different reputable tube dealers. Out of the 4 tubes only one does not produce a hum in the phone...
    • Tubes4Wx
    • Thread
    • fisher 400 hum phono tubes
    • Replies: 1
    • Forum: Fisher
  2. MarmotDavid

    Tube Preamp Questions

    These may be silly questions, but here goes.... I have an older Counterpoint SA-1000 hybrid tube preamp, circa 1988-1990 ish. It has a phono section with two 12AX7 tubes and line section with one 6DJ8 tube. I like it a lot and I'm in the process of upgrading tubes. First question -When I am...
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