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Bluetooth MIDI Pedal


  • Control your guitar effects, music sheets and keyboard presets all wirelessly!
  • Solid, stage-ready controller that gives you the freedom to control your iPhone and iPad apps.
  • Turn your BIAS FX into a full-fledged guitar amp-and-effects powerhouse.
  • Works wirelessly with thousands of music apps including BIAS FX, JamUp, OnSong, GarageBand, Loopy—most any iOS app that supports CoreMIDI.
  • Unique metal case and rock-solid design withstand the harshest and toughest conditions on the road.
  • Fully customizable with the companion BT Editor app, creating at-the-ready banks and presets.
  • The BT4 is best of breed: ultra-responsive, compact, durable and easy to use.
  • Designed in California, U.S.


Millions of musicians use mobile music apps in new and exciting ways. With today’s Bluetooth technology, it is now possible to control music apps for guitar, sheet music, controller, keyboards or drums wirelessly. We look to the future to inspire more musicians to go one step further in their everyday music life.


There are now hundreds of amazing music apps available, including our BIAS FX, BIAS Amp, and JamUp, Loopy, OnSong and countless more. Our goal is to give you an effortless and ultimate musical experience through wireless control of all these terrific music apps.




Ready to rock the world? Whether it’s a small gig or a large stadium show, the BT4’s 100%-steel case and foot switches are built to last throughout the roughest road tours and at the wildest venues.



Nail your chops to perfection! Wirelessly control JamUp’s metronome tap tempo by tapping BT4’s footswitch with your foot. Use JamUp’s phrase sampler to practice a difficult riff without taking your hands off your instrument.



Record your next album while saving studio time and hassle. Step on BT4’s footswitch to start and stop recording a song in a multi-track recording app like GarageBand or Auria. You can turn sheet music pages using apps like OnSong.



Replaces the mess of paper and binders with performance-ready, interactive, digital chord charts on your mobile device. With BT4, you can assign the pedal buttons to switch to the next song, previous song, page scroll up and down.



The world’s first cross platform guitar effects processor. BIAS FX is fully compatible with BT4, and you can control any and every parameter with the BT editor app.


Create music by layering looped recordings of singing, beatboxing, or playing an instrument with a savvy, sophisticated, tactile looper. Loopy is fully compatible with BT4, so you can toggle session pause, select next/previous track, toggle mute, toggle record, and more.


The BT4 pedal can switch the preset of SampleWiz simply use PC message without any mapping, or map any Samplewiz parameter to the expression pedal.


OnSong replaces the mess of paper and binders with performance-ready, interactive, digital chord charts on your mobile device. Fully compatible with BT4, you can assign the pedal buttons to switch to the next song, previous song, page scroll up, page scroll down, or adjust the volume and tempo by using an expression pedal.

BT2 Bluetooth MIDI Pedal

The BT2 is built with the same hard, stage ready metal case as the BT4 in a smaller, travel friendly size.

BT4 Featured Artists

Vernon Reid

Vernon Reid from Living Colour is taking the BT4 MIDI pedal as part of his main touring rig.

Ryan Knight

Ryan Knight from The Black Dahlia Murder and his BT4.

Paul Masvidal

Paul Masvidal is bringing the BT4 pedal onstage for his upcoming gigs!

Angel Vivaldi

Angel Vivaldi gigs with BT4 pedal whenever he travels.

Todd Pritchard

“The BT4 allows me to easily grab any of the tones I’ve made and I have complete control over how the pedal operates. I can also use the pedal to flip through my sheet music on site reading gigs, which is fantastic.”

Tony Norman

Tony Norman (Morbid Angel, Monstrosity) is rocking the stage with BIAS FX iPad and BT4 pedal.


Compatible Apps

  • BIAS FX, JamUp XT (free), JamUp Pro XT
  • GarageBand, AmpliTube, AmpKit
  • Most Core MIDI apps

Compatible Devices

  • iPhone 4S & newer, iPod touch 5th & newer, iPad 3 & newer.
  • iOS 8 or later is required.

BT-4 Technical Specs

  • Connection: Bluetooth 4.0
  • Buttons: 4 buttons
  • Expression Pedal Jack: Yes
  • Battery: AA x 2
  • Size: 280 x 100 x 37 (mm)
  • MIDI messages: Program Change, Control Change


  • Will the BT4 pedal work with my apps?

The BT4 pedal is designed to give you full wireless control of most CoreMIDI apps, including JamUp, BIAS FX, Audiobus, Loopy, OnSong, Geo Synthesizer and hundreds more. We are working with several guitar, drum, keyboard and sheet music app developers to add even more control using the BT pedal.

  • Will the BT4 pedal support my iOS device?

The BT4 is compatible with iPhone 4S & newer, iPod touch 5 & newer, and iPad 3 & newer. iOS 8 or later is required. The BT4 pedal uses the latest technology, making it impossible to run on older devices.

  • Does it work with Mac, Windows, Android?

At the moment, the BT4 pedal works only with iOS. We will evaluate possible integration and support for Mac OS X and Windows in the future.