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Tube Boost Guitar Pedal

A guitar boost pedal running on a 12au7 vacuum tube.

redsquirrel7redsquirrel_7
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2.6k views
5 comments
143 followers
15 likes
  • Description
  • Details
  • Files 0
  • Components 15
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  • Logs 2
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  • Instructions 0
  • Discussion 5
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  • redsquirrel7redsquirrel_7

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MUSIC Vacuum tube GUITAR vintage overdrive

Related lists

Guitar Projects

Guitars and Guitar Accessories

Guitar

Guitar mods, amps, pedasl etc.,

This project was created on 03/26/2014

Description

This tube boost/overdrive pedal is largely based on the Matsumin Tube Caster. This one features gain, tone, and volume control as well as a bypass switch. The 12au7 vacuum tube will only be running at 9 volts. This should produce a nice vintage tube sound with a little crunch to my electric guitar.

Components

  • 1 × 220k Ohm Resistor
  • 1 × 1M Ohm Resistor
  • 1 × 470k Ohm Resistor
  • 1 × 100k Ohm Resistor
  • 1 × Linear 50k Ohm Pot (gain)

View all 15 components

Project Logs
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  • Finished!

    redsquirrel_7 • 03/31/2014 at 14:32 • 0 comments

  • Finished Bottom of Tube Socket

    redsquirrel_7 • 03/26/2014 at 14:46 • 0 comments

View all 2 project logs

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Matthew Toledo wrote 04/03/2023 at 04:56 • point

I know this project is old, but does anyone have the schematics for how to assemble or is the photo the only schematic we need?

  Are you sure? yes | no

Eric Evenchick wrote 03/31/2014 at 17:53 • point
Nice looking pedal, but I'd be very worried about breaking that tube with my foot...

  Are you sure? yes | no

redsquirrel_7 wrote 03/31/2014 at 20:34 • point
It has a cover that goes over the tube to prevent that from happening. It looks cooler without it though. :)

  Are you sure? yes | no

FiveseveN wrote 03/26/2014 at 16:04 • point
This is a cool project if your're valve-curious but afraid of high voltage (as well you should be). Those interested can find a 170-page-long thread about this circuit and derivations on DIYSB: http://www.diystompboxes.com/smfforum/index.php?topic=63479.0

  Are you sure? yes | no

redsquirrel_7 wrote 03/26/2014 at 18:01 • point
I read a lot of this thread it is quite excellent and I also recommend it to anyone interested in learning about this circuit!

  Are you sure? yes | no

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