Schematic Tube Preamp

The “universal” preamp Are this transformers usable (z primary 5-20k / z secondary 12.5-50k) Tube stereo pre amplifier preamp schematics audio power valve vacuum transformer radios circuits electronic secondary list 5a 500v 117v ct

Are this Transformers usable (Z primary 5-20K / Z secondary 12.5-50k)

6 tube stereo pre Secondary 20k transformers 50k usable primary Preamp schematic universal tube 12ax7 phono circuit supply power 4s bias simple tubes cascade reyhan

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6 Tube Stereo Pre

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Are this Transformers usable (Z primary 5-20K / Z secondary 12.5-50k)

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The “Universal” Preamp | Cascade Tubes