• 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.

Help with 6AQ5 schematics

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Which of the following phase splitters would you choose for 2x6AQ5 push-pull amp?

How do I determine the resistors marked with "?".

Thank you.
 

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Re. first circuit alternatives: B+ is a little low to use the cathodyne / split-load. The LTP is therefore preferable.

With the LTP (as in second post) there will be enough gain for typical modern sources without the first input stage. You may consider a transistor CCS for the "tail" of the LTP.

SveinB.
 
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