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

Tube Preamp Schematic

Are this transformers usable (z primary 5-20k / z secondary 12.5-50k) Schematic 12ax7 tube 12au7 preamp preamplifier amplifier valve vacuum guitar diagram audio diy tubes circuits circuit amp power mini diyaudioprojects

Guitar preamp tone explained 6 tube stereo pre Transformers usable 20k secondary 50k primary

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 117v 500v ct

Preamp guitar tube stage tone explained effectrode common

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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
6 Tube Stereo Pre

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

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