AirTurn | CME WIDI Master


Wireless MIDI over Bluetooth

Fully Standalone. Completely Wireless. 100% MIDI.


WIDI Master is your virtual MIDI cable.

Bluetooth MIDI is the new wireless standard as approved by the MMA. Now you can connect all your MIDI devices - without computers - without cables - with MIDI over Bluetooth!

Control your MIDI device hands free with AirTurn Bluetooth Pedals.

Simply set your AirTurn Bluetooth Pedal to Mode 7 and plug in the WIDI Master to your device for automatic connection. Connect to a phone or computer to easily assign MIDI commands using the free AirTurn Manager app. Common MIDI messages, CC, Program Changes, Notes, and custom codes are supported.

What is WIDI Master?

Smart Connectivity Algorithms

WIDI distinguishes itself from any other Bluetooth MIDI technology available through its unique SCA technology. SCA is a collection of highly effective algorithms that optimise the performance of WIDI in any given situation. SCA stands for Dual Role Automation, Automatic Pairing Mode, Smart Hub Functionality, Latency Reduction Optimisation and Range Performance Optimisation!

Point to point Bluetooth® LE / MIDI connectivity

  • Simply replace your MIDI cables
  • Rearrange your studio and enjoy the freedom of WIDI

Bluetooth 5: Go Faster, Go Further

  • Trusted technology for live and on stage
  • Secure connection with twice the speed and four times the range

Ultra low latency

  • Go pro with ground-breaking latency reduction as low as 3ms
  • Smart algorithmic transmission optimization

Automatic pairing

  • Setup instantly. Operate easily.
  • Automatic master/slave switch and automatic paring.

MIDI Clock and SysEx

  • Sync your drum machines, step sequencers and arpeggiators
  • Transmit all MIDI messages over Bluetooth

Detachable design

  • Only connect what you need
  • Separated adapter design for MIDI OUT only

Versatile application

  • Connect with even the rarest instruments
  • 45 degree bridge cable design for vertical DIN connector setup

No external power

  • Enjoy the fully standalone wireless solution
  • Supports both 5V and 3.3V via MIDI OUT DIN

Lifetime updates

  • Always benefit from the latest developments
  • New features updatable via using WIDI App (iOS/Android)

Wireless upgrade via Bluetooth

  • The easiest way to upgrade your firmware
  • Firmware upgradeable by air via WIDI application software for Androïd & iOS.

What can you do with MIDI over Bluetooth?


  • Connect two standalone MIDI hardware devices with two (2) WIDI Masters.

Bluetooth® LE to MIDI

  • Pair your Bluetooth MIDI controller with any standalone MIDI hardware device using one (1) WIDI Master.

MacOS/iOS Bluetooth® LE to MIDI

  • Play your standalone MIDI hardware and pair it with your iOS device or Mac with one (1) WIDI Master using smart auto switch mode. About Windows/Android.


Wireless technology

Bluetooth 4/5, MIDI over Bluetooth® Low Energy Compliant


1x MIDI IN (5pin-DIN)

1x MIDI OUT (5pin-DIN)

Switch, indicator

1x switch

1x Multicolor LED

Compatible devices

WIDI Master, WIDI BUD, Bluetooth MIDI controllers,

iPhone/iPad/iPod Touch, Mac with Bluetooth 4.0 or later

Compatible OS

iOS 8 or later, OSX Yosemite or later

Firmware update

By air using WIDI App (iOS/Android)

Power supply

5V/3.3V compatibility MIDI OUT DIN

Power consumption

37 mW


Main: 21mm (W) x 21mm (H) x 49mm (D)
Sub: 18mm (W) x 18mm (H) x 24mm (D)