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aptholman

  1. ViperZ

    Apt Amplifier Model 1 amplifier question - buzzing

    Hi all, I rebuilt Apt Power Amplifier Model 1 amplifier, but have this weird condition that I don't understand. When no input is connected, there is loud buzzing (transformer-like) through only the right channel (it's much quieter in the left channel). As soon as I connect RCA input from my...
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