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

Diy Tube Preamp Schematic

Secondary 50k transformers usable 20k primary Tube preamplifier 12au7 preamp schematic diy amp valve amplifier circuit headphone guitar schematics circuits diagram tim electronics tubed electronic vacuum

Schematic tube 12ax7 12au7 preamplifier preamp amplifier valve vacuum diagram diy audio driver tubes chandler circuits circuit amp guitar diyaudioprojects 6 tube stereo pre Preamp circuit

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)

Tube stereo pre amplifier preamp schematics audio power valve vacuum transformer radios circuits electronic secondary list 5a 500v 117v ct

Chandler tube driver schematicA guitar tube preamp circuit schematic. .

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A guitar tube preamp circuit schematic. | Download Scientific Diagram
A guitar tube preamp circuit schematic. | Download Scientific Diagram

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

6 Tube Stereo Pre
6 Tube Stereo Pre

CHANDLER TUBE DRIVER SCHEMATIC
CHANDLER TUBE DRIVER SCHEMATIC