• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

symptom of a dying (gain) tube

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i should mention that the gain is also lower. it takes about 3 times the turn of the volume that is usually required to reach the desired listening level.

the whole component is fairly new and the caps should be well within their lifespan.
 
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