• 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.

Anyone identify this Mullard?

One I found in the bottom of my tube drawer:


  • MysteryTube.jpg
    18.1 KB · Views: 158