• 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.

Impedans of trafo for EL504 inSE

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If I remember correctly I used PC86 as drivers, loaded with Hammond 156C chokes. The OPT´s was my own design that involved 25% cathode feedback.
The amp put out a couple of watts and sounded quite darn good, but for various reasons it never got further that the prototype stage. No schematic available.
 
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