• 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.

What tube sounds best? EL84 vs 6P3SE vs EL34

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There's a great video on YouTube somewhere of a guy trying to use an enormous power transformer for a meager SE project, and the transformer saturated with very little DC current. These are a terrible choice for SE use, and I'd suggest measuring FR with what you have built. You may find that "such great bass" is a qualitative description of poor frequency response.
 
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