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    MT15 Replacement Power Tube Selection

    My older MT15 has the factory installed RUBY 6L6GCMSTR (short bottle 6L6) power tubes. Since I've played the MT15 5-10 hours per week for 2.5 years, I'm planning to replace the power tubes soon. I love the sound of the Ruby tubes and clearly they have lasted well, but they are currently/no...
    • scott_
    • Thread
    • 5881 6l6 mt15 power tube replacement short bottle small bottle
    • Replies: 23
    • Forum: Amplifiers
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