A very nice move from Positive Grid. Here are the details:

Meet BT-4 Foot Controller

BT-4 is a Bluetooth MIDI foot controller for iPhone and iPad that allows you to control JamUp or other music apps wirelessly.

BT-4 brings the live control solution to iPad®, iPhone® and Mac for just $99. Now guitarists can have a metal case, plug in and play, wireless foot controller at an unprecedented price and experience ultimate tone with the guitar amps and effects in JamUp, BIAS, GarageBand or other compatible applications

Now JamUp users will be able to use BT-4 to toggle between dozens of studio-grade amp and stomp box effects hands free. From toggling amps and effect switches, to switching between presets, controlling Jam Player’s iTunes song playback functions, triggering phrase sampler recording and over-dubbing, and even controlling the built-in metronome or tapping out the tempo, wireless and hands free.

Features

  • 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

Positive Grid’s Bluetooth foot controllers will cost $99.99 (BT-4 four-button set) and $79.99 (BT-2 two-button set). Both are slated for a Spring 2014 release.

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