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StompBoXed - The Guitar Pedal Builders Repository: 12AU7 Tube / Tubed
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Circuit power supply preamp tube microphone input jack combo
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![Tube Microphone Preamp](https://i2.wp.com/www.pmillett.com/images/micpre2.gif)
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![Guitar Preamp Tone Explained - Effectrode](https://i2.wp.com/www.effectrode.com/wp-content/uploads/2018/07/tube_stage_320px.gif)