• 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.

Who made these?

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Any ideas?
 

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PRR

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Joined 2003
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Looking at the green lettering on the tube base, I would have said....

I would say that "Chief" (whoever they were) used green as their trade-dress, and used green ink on the tubes so they would not take-back tubes sold by other companies.

Whether Chief had a gallon of green and a base-stencil, or asked GE to use green on their tubes, we will never know.
 
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