Wireless MIDI over Bluetooth

Get rid of those MIDI cables!

We have been working on wireless MIDI solutions for over 15 years….

Now you can add TRS MIDI , DIN-6-mini MIDI and DIN-5 MIDI to your wireless MIDI setup. You even can work with unpowered MIDI ports by utilizing the USB-C power connector.

Simply replace your USB to MIDI cables. Connect to macOS and iOS wirelessly with the versatile Bluetooth to MIDI technology.

And you can do much more: instrument-to-instrument and wireless MIDI groups are already available.

Bluetooth MIDI is just getting started…

What is WIDI Jack?

WIDI Jack is your virtual MIDI interface

Bluetooth MIDI is the new wireless standard as approved by the MIDI Association.

Now you can connect all your MIDI devices – without cables – even without computers – with WIDI Jack!

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 optimize the performance of WIDI in any given situation. SCA stands for Dual Role Automation, Automatic Pairing Mode, Smart Hub Functionality, Latency Reduction Optimization and Range Performance Optimization!

Instrument to instrument BLE 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 3ms latency

Go pro with ground-breaking latency reduction 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

No external power needed

Enjoy the fully standalone wireless solution Supports both 5v and 3.3v on MIDI OUT

Versatile application

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

User-friendly controlling app

The easiest way to process your lifetime updates Always benefit from the latest developments

Secure attachment

Simply stick it to your MIDI device Clever design solution with magnet

Wide compatibility

Switch between TRS MIDI type A and type B Fully compatible with WIDI Master and future WIDI family

What can you do with MIDI over Bluetooth?

Fully Standalone. Completely Wireless. 100% MIDI.

Add Bluetooth MIDI to all your MIDI devices. Connect pedals, controllers and instruments by utilizing the different cable options. Add an external power supply via USB-c for unpowered MIDI ports and devices with only MIDI IN. Simply stick WIDI Jack to your device with the smart magnet and enjoy ultra low latency wireless MIDI.


Connect two standalone MIDI hardware devices with two (2) WIDI Jacks or mixed with WIDI Master.

Bluetooth (BLE) to MIDI

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


Play your standalone MIDI hardware and pair it with your iOS device or Mac with one (1) WIDI Jack unit using smart auto switch mode. For Windows/Android use Android 8 or later, Windows 10 v1909 or later.

Which MIDI Device Will You Connect?





MIDI IN/OUT (2.5mm jack/TRS),

USB Type-C (power only)


USB Type-C host/slave

Compatible MIDI devices

All MIDI devices with 2.5mm or 3.5mm (1/8") TRS (Type A/B), mini DIN, 5-pin DIN via multiple cable options

MIDI devices with 5-pin DIN OUT

USB 2.0 Class Compliant MIDI devices

Power supply

5v/3.3v via MIDI OUT

5v via USB

5V/3.3V via MIDI OUT

5v via USB
500mA for attached USB 2.0 device


Switch button

TRS switch (Type A or B)

Switch button

Switch button


Only 40% the size compared to your Apple iPods charging case!

34mm (W) x 14mm (H) x 38mm (D).

Main: 21mm (W) x 21mm (H) x 49mm (D)

Sub: 18mm (W) x 18mm (H) x 24mm (D)

Not fixed. Subject to change!

34mm (W) x 14mm (H) x 38mm (D).


Bluetooth 5, MIDI over Bluetooth Low Energy-Compliant

Compatible wireless devices

WIDI Master, WIDI Jack, WIDI Uhost, WIDI Hub4, WIDI Ped3, WIDI BUD

Standard Bluetooth MIDI controllers, Mac, iPhone/iPad/iPod Touch with Bluetooth 4.0 or later.

Compatible OS

iOS 8 or later, OSX Yosemite or later
Android 8 or later, Windows 10 v1909 or later


As low as 3 ms (test with two WIDI Masters on BLE 5)


20 meters without obstruction

Firmware upgrade

By air using WIDI App (iOS/Android)


Multicolor LEDs

Power Consumption

37 mW


What can WIDI Jack do for you?

Connect MIDI devices with mini jack MIDI

(2.5mm or 3.5mm (1/8″) and Type-A/Type-B)

Connect MIDI devices with only MIDI IN via USB-C external power supply port on WIDI Jack

Connect MIDI devices with DIN-6-mini MIDI

Connect MIDI devices with unpowered 5-PIN DIN MIDI via USB-C external power supply port on WIDI Jack

Advanced Wireless Connectivity

1-to-4 MIDI Thru + 4-to-1 MIDI Merge

Add up to five (5) WIDI devices per wireless group. Enjoy duplex (bidirectional) transmission between one (1) central (master) and up to four (4) peripherals. And run multiple groups simultaneously saved as default settings in your WIDI devices’ memory.

Order WIDI Jack now!

  1. Select your preferred bundle with free cable option!
  2. Add additional accessory cable options as you like!
  3. View all products and accessory cables in the online store!

WIDI Jack + DIN-5 cables

WIDI Jack + TRS 3.5mm (1/8″) cables

WIDI Jack + TRS 2.5mm cables

WIDI Jack + DIN-6mini cable

Advanced Wireless Connectivity

What industry leaders say about us

I was lucky enough to be able to start working with a pair of prototype WIDI adapters from CME. They worked flawlessly and transparently. For example, I immediately had our flagship synthesizer, the Moog ONE, controlling and being controlled by our older MIDI instruments and vintage MIDI controllers.



CME WIDI Master is the first Bluetooth MIDI adapter that can perform as both a “peripheral” or “central” device, allowing fast, low-latency, and stable point-to-point wireless connections between any two devices.


Former President of MMA

I (Roger) have tested WIDI Master and found it to be well-designed, fast, easy to use and low-cost. Interestingly, CME have figured out how to get the latency down to as low as 3 ms, which is quite an accomplishment. In my test playing 3-note chords and melody with 3D MPE expression, I didn’t perceive any added latency or delays normally associated with Bluetooth.


CEO RogerLinn Design