• 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.

EL34 A2 Cascode SE triode

Wanted to share this circuit I’m working on. Cascode output is somewhat unusual and it’s an easy way to get into A2. I just finished the breadboarding and testing/tweaking. I spent a few days designing PCBs and I’ve just ordered some. I’ll post some updates here once I get the PCBs populated. Then I’ll be designing the chassis. Let me know what you think.
 

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  • Fin V2.3 with PS_Original.jpeg
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  • Screen Shot 2024-04-05 at 2.00.31 PM_Original.jpeg
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  • FR vs Power 1-10W_Original.jpeg
    FR vs Power 1-10W_Original.jpeg
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  • 1W_Original.jpeg
    1W_Original.jpeg
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  • 5W_Original.jpeg
    5W_Original.jpeg
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  • 9W_Original.jpeg
    9W_Original.jpeg
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  • 10W_Original.jpeg
    10W_Original.jpeg
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