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StompBoXed - The Guitar Pedal Builders Repository: 12AU7 Tube / Tubed
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12au7 tube preamplifier
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![StompBoXed - The Guitar Pedal Builders Repository: 12AU7 Tube / Tubed](https://1.bp.blogspot.com/-ckEezVjG5F8/T-_C2mtFRMI/AAAAAAAABWg/qoHGcrncvDo/s400/12AU7-Tube-Preamplifier-Schematic.png)
![12AU7 Line Preamp](https://i2.wp.com/www.bonavolta.ch/hobby/images/audio/12au7lin.gif)
![StompBoXed - The Guitar Pedal Builders Repository: 12AU7 Tube / Tubed](https://1.bp.blogspot.com/-ckEezVjG5F8/T-_C2mtFRMI/AAAAAAAABWg/qoHGcrncvDo/w1200-h630-p-k-no-nu/12AU7-Tube-Preamplifier-Schematic.png)
![12AX7 Tube (valve) Preamplifier Kit | Valve amplifier, Diy guitar amp](https://i.pinimg.com/originals/8b/51/1e/8b511e82d9f853dbee45482d4600607f.jpg)
![Tube preamp - Page 6 - diyAudio](https://i2.wp.com/www.diyforums.org/SSMH/variants/SSMH-12AU7.gif)
![12au7 Preamp](https://i2.wp.com/www.audiofanatic.it/Schemi/Tipo/Valvole/pre/pic_pre/pre_6SN7_4.jpg)
![StompBoXed - The Guitar Pedal Builders Repository: 12AU7 Tube / Tubed](https://2.bp.blogspot.com/-XtG9QxOfXNM/T-_C6TkbCWI/AAAAAAAABWs/4lOir5hOCfI/s400/12AX7-12AU7-Tube-Preamp-Schematic.png)
![12AU7 Tube Preamplifier](https://i2.wp.com/electronics-diy.com/schematics/1223/12au7-tube-preamplifier.jpg)