Aux Switch


Sturdy 3-button controllers for your Eventide and Digitech devices. The Saturnworks aux replaces the FS3, FS3X, and FS300. It also works as a controller for many EHX devices, including the Grand Canyon.

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Aux Switches

Aux switches are 3-button footswitches that provide external control for Eventide, Digitech, and many other devices. The aux switch replaces the Digitech FS3X, FS300, or FS3 — with three buttons for ‘up,’ ‘down,’ and ‘mode’ functions.

Saturnworks aux switches can also be used to the control a variety of other devices such as the EHX Grand Canyon, 720 Looper, Mod Rex Polyrhythmic Modulator, Super Pulsar and Superego+. The aux switch also works as a replacement for the TC Helicon Switch 3 pedal — as well as any other device that uses a triple momentary switch with tip, ring, tip+ring functionality.

The aux switch must connect to your device with a TRS (in other words, stereo) patch cable (not included). If you need a TRS cable, we have them available here.

The aux switch comes in two sizes. Both are functionally identical. The larger ‘BB’ size (4.7″ x 3.7″) simply allows a bit more space between the switches, while the smaller ‘B’ size (4.4″ x 2.4″) saves on space.

New starting January 2021: upgraded soft touch momentary switches! We are now installing new higher-grade soft touch momentary switches in our soft touch momentary applications. We were able to source a higher quality soft touch momentary switch than any switch we’ve used previously. Our new switch is both quieter and beefier than any other soft touch momentary switch we’ve been able to source previously. 

The Saturnworks aux switch features boutique-grade components, including:

  • Heavy duty soft-touch footswitches.
  • A Neutrik TRS jack.
  • Sturdy cast-aluminum enclosures.
  • A 1-year warranty against parts and manufacturing defects.

Please note: The pedals in the images are stock photos, not the actual pedals you will receive. The pedals you receive may vary in their graphics, knob colors, and/or LED colors, where applicable. We have our graphics options listed here.

Upgrades and Customizations

Want to add premium custom upgrades to your pedal, or make it reflect your unique aesthetic? We have a variety of customizations and upgrades available for our aux pedals, including powder coated enclosures and premium Switchcraft USA jacks. Check out our custom upgrades page for details, or contact us with questions.

Names of third party brands and specific devices are for informational/reference purposes only and are the trademarks/intellectual property of their respective companies/owners.

Additional information


B Aux, BB Aux