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tube amp bias issues

  1. Strgazr1967

    Welborne Labs ST70 bias, caps and tube questions

    I picked up this ST-70 a few weeks ago and have been cleaning it, going over it and deciding on tube choice for when I set it up after Christmas. The wife's decorations require I take my system out for the holidays. I have a few questions. While going over the amp I noticed that whoever did the...
    • Strgazr1967
    • Thread
    • bias adjustement capacitors dynaco gold lion st-70 tube amp bias issues tubes
    • Replies: 1
    • Forum: Tube Audio
  2. T

    McIntosh MC60 Plate Voltage

    Hello, I recently had my Mac 60's gone through. When I got them back they sounded great however very soon (on my first use) one plate on a 6550 began glowing red. They still sounded great however I shut them down and sent the one back to the Tech, He more or less sent it right back and said...
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