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

Tube Preamp Schematic

Transformers usable 20k secondary 50k primary Schematic 12ax7 tube 12au7 preamp preamplifier amplifier valve vacuum guitar diagram audio diy tubes circuits circuit amp power mini diyaudioprojects

Tube stereo pre amplifier preamp schematics audio power valve vacuum transformer radios circuits electronic secondary list 5a 117v 500v ct Preamp guitar tube stage tone explained effectrode common Guitar preamp tone explained

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

Are this transformers usable (z primary 5-20k / z secondary 12.5-50k)

6 tube stereo pre

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6 Tube Stereo Pre
6 Tube Stereo Pre

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

StompBoXed - The Guitar Pedal Builders Repository: 12AU7 Tube / Tubed
StompBoXed - The Guitar Pedal Builders Repository: 12AU7 Tube / Tubed

Guitar Preamp Tone Explained - Effectrode
Guitar Preamp Tone Explained - Effectrode