• 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.

replace 5R4GA to WE 274B

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audioland

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Joined 2015
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Hi, can I change 5R4GA to WE274B? Or what do I need to change in order to replace it with WE274B.

Amp is 2A3. Thank you
 

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