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line level tubes

  1. 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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