WIDI Master
Premium Bluetooth MIDI
Get rid of those MIDI cables!

We have been working on wireless MIDI solutions for over 15 years...
Finally, you can replace your USB to MIDI cable with Bluetooth to MIDI solutions.
Of course you can do much more: instrument-to-instrument and wireless MIDI groups are already available.
And Bluetooth MIDI technology keeps evolving...
What is WIDI Master?
WIDI Master is your virtual MIDI cable.
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 MIDI over Bluetooth!

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!
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 BLE MIDI connectivity
Simply replace your MIDI cables
Rearrange your studio and enjoy the freedom

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

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?
Fully Standalone. Completely Wireless. 100% MIDI.


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


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

MacOS/iOS BLE 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.

WIDI Groups

Simply set up WIDI groups via the WIDI App or with the group auto-learn mode.
Create fixed pairs when working with multiple wireless MIDI connections at once.
Easily configure advanced WIDI groups of up to 5 Bluetooth MIDI devices with one (1) central WIDI device and up to four (4) peripherals over 16 MIDI channels.
Run multiple groups at once with automatic pairing from default memory.

Which WIDI Do You Need?
Technical Specification
Technical Specification | WIDI MASTER | WIDI JACK | WIDI Uhost | WIDI BUD PRO |
---|---|---|---|---|
Bluetooth 5 | Each WIDI device implements high-performance Bluetooth Low Energy 5 (BLE 5) with twice the speed, four times the range and Adaptive Frequency Hopping technology for minimal interference, secure connectivity and optimal wireless performance. | |||
Latency | As low as 3ms between 2 WIDI devices | |||
Range | 20m/65ft without obstacles | |||
Power | Only via MIDI power. No external power option. | Via MIDI power or external via USB-C port | Via USB bus-power or external via USB-C port | Only via USB bus-power. No external power option. |
WIDI App | Available for free for iOS and Android via AppStore & Google Play | |||
WIDI Groups | Easily configure WIDI groups via WIDI app or with group auto-learn. Create fixed pairs and 1-to-4 MIDI Split/Thru or 4-to-1 MIDI Merge with one (1) central WIDI device and up to four (4) peripherals consisting of WIDI or standard Bluetooth MIDI devices over 16 MIDI channels. Run multiple groups at once with automatic pairing from default memory. | |||
Automatic Pairing | Between WIDI devices and with standard BLE MIDI controllers. | |||
Compatible OS via Bluetooth (Manual paring) | With iOS, macOS and Android via integrated BLE MIDI. With Windows 10 via Korg BLE MIDI drivers. | |||
Compatible OS via USB | N/A | N/A | macOS, iOS, Windows, Android, Linux, ChromeOS | macOS, iOS, Windows, Android, Linux, ChromeOS |
Special |
Work with all MIDI devices with 3.3v or 5v MIDI Power via 5-PIN MIDI OUT ports. Does not work with devices with only MIDI IN or unpowered MIDI Out. Check the instruction manual of your device. |
Accessory cables available for TRS MIDI and DIN MIDI ports. Also works with devices with only MIDI IN or unpowered MIDI ports via external USB-C power. |
Works with all "class complaint" USB MIDI devices. Smart power distribution for bus-powered USB devices. Only works as a USB device with USB hubs. Works with the 1st USB MIDI port for USB devices with multiple (virtual) MIDI ports. Works as USB host with USB OTG cables. |
Adds premium Bluetooth MIDI to all operating systems, including Linux and ChromeOS. Bypass wireless MIDI limitations of iOS/macOS. Enjoy auto-pairing and group auto-learn for WIDI and Bluetooth MIDI controllers with optimal latency and jitter performance. |
Technical Specification | WIDI MASTER |
---|---|
Bluetooth 5 | |
Latency | As low as 3ms between 2 WIDI devices |
Range | 20m/65ft without obstacles |
Power | Only via MIDI power. No external power option. |
WIDI App | |
WIDI Groups | |
Automatic Pairing | Between WIDI devices and with standard BLE MIDI controllers. |
Compatible OS via Bluetooth (Manual paring) | With iOS, macOS and Android via integrated BLE MIDI. With Windows 10 via Korg BLE MIDI drivers. |
Specifications are subject to change without notice.
What does Roger Linn have to say about WIDI Master?
Buy directly from CME.
Worldwide shipping.

Press & Awards

Press & Awards





























Discover the WIDI family
Bluetooth MIDI solutions. Connect all your MIDI devices!


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.

CYRIL LANCE
CTO MOOG Music
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.

TOM WHITE
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.

ROGER LINN
CEO RogerLinn Design