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I have biased tubes in the past above true ground but. .

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what is a basic formula for this? It has been a long time and I don't remember the values I used for this. I want to bias a filament 20 volts above true ground.

Thank you.


iBasso DX300MAX Ti. Focal Utopia and Stellia. iBasso SR2. Mr. Speakers, Ether II, Voce stats. Manley, Absolute headphone amp. LTA MZ3, Z10e electrostatic amp. Many other headphones, amps, cables etc.

Edits: 10/22/24

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