• 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.

NOS 6P3S-e or cheap new 5881? Identify this tube..

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The getter is different from all the 6n3c-e ( 6p3s-e). Are they blank Groove tubes... Sovtec?? Nothing on them, blank bulb... I've post last week about them... I've look all over the place, the getter is a small ring ( normally, on 6p3s-e, it is 2 small rings... Any help???
 

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