• 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.

Next Amp: 2a3PSE, 300B or KT88SE UL

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Yes, that’s just a partial schematic; I would use the 2A3 heater circuit right out of the Seth PP.

The real question is can the LL1660 work as interstate transformer and a phase splitter
(Like the Seth schematic) at the same time.
 
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