• 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.

6N1P

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I've wondered why they designed it with such a high heater current... My guess is because it provides a more physically robust filament, able to endure more vibration(?)

..Todd
 
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