Positive Grid Announces Bluetooth MIDI Foot Controller

Developer of one of our favourite effect apps, Positive Grid was teasing around a new wireless or ‘bluetoothy’ device the last few weeks. Today they confirmed the suspicion with the announcement of programmable, Bluetooth foot pedals called the BT-4 & BT-2.

BT-4 front


  • Bluetooth MIDI foot controller for iPad and iPhone
  • Solid metal case with 4 assignable foot switches
  • Made for JamUp XT, JamUp Pro XT, GarageBand
  • Send Bank Change, Program Change and Control Changes
  • External expression pedal jack
  • Built-in iOS link for plug and play audio interface
  • Optimized for active/passive pickups for both guitar and bass
  • BT iOS app runs in background on iOS to send MIDI
  • AA x 2 batteries
  • iOS 7 ready

How It Works

BT-2 and BT-4 foot controllers are MIDI foot controllers based on Bluetooth 4.0 technology. They allow users to assign MIDI messages to the controllers by using an iOS app that edits the assignments. Each and every MIDI-compatible iOS app supports a standard communication protocol that enables them to be controlled wirelessly.

These apps can be from the Positive Grid family of products – JamUp XT and JamUp Pro XT — or any other MIDI-compatible app such as GarageBand, OnSong, Auria and so forth. Both BT pedals can be expanded by adding an expression pedal or footswitch using a ¼-inch phone-type jack, allowing musicians to control rotary functions like whammy and wah effects, keyboard sustain, amp gain and volume, EQ and more.

Technical specs

BT-4 Foot Controller

  • Connection: Bluetooth 4.0
  • Buttons: 4 buttons
  • Guitar Input: 1/4″ guitar input
  • Line Out: L: mono 1/4″ jack
  • Headphone Output: R: stereo 1/8″ jack
  • Expression Pedal Jack: Yes
  • iOS audio connection: iOS Link 1/8″ jack
  • Battery: AA x 2
  • Size: 280 x 100 x 37 (mm)
  • MIDI messages: Bank Change, Program Change, Control Change

BT-2 Foot Controller

  • Connection: Bluetooth 4.0
  • Buttons: 2 buttons
  • Expression Pedal Jack: Yes
  • Battery: AA x 2
  • Size: 140 x 100 x 37 (mm)
  • MIDI messages: Bank Change, Program Change, Control Change

Compatible Devices

BT-4 is compatible with iPhone 5s, iPhone 5c, iPhone 5, iPhone 4s, iPod touch 5th generation, iPad Air, iPad 4th generation, iPad 3rd generation and iPad mini. iOS 6.1 or later is required.

The BT-2 and BT-4 are going to be released next spring and will retail for $99 (BT-4 price). You can sign up to the PositiveGrid newsletter on their website to stay on top of the latest news.


1 Comment
  1. where to buy this great product??

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