• 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..

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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I did got some 6n3c-e last week from Jim McShane , a good re-seller in the USA

That's where mine came from.:up:

It´s pure comercial rebranding, in the insides there is a russian 6p3s
just keep the dissipation below 20 watts per tube and the screen below 350v

I run mine PP triode strapped ~490v B+ @40ma.:redhot:

jeff