• 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.

5840 EF732 pentode distortion


2020-01-02 5:37 pm
A curious question, but I have a few spare EF732, miniature pentode valves as used in the Telefunken AK47 microphone. I'd like to use them on a preamp and run it with a 'warmer' sound, - so some controllable harmonic generation. Can anybody advise on the best way to do this. I'l be running at 24V rail. I thought of straddling the supply with a divider chain having a pot in the middle to bias the grid. Would this work? Is there a better way? Thanks for help in advance.