WIDI Uhost
3-in-1 USB MIDI Bluetooth Solution

The wireless interface for "Class Compliant" USB MIDI

We truly believe in the power of the community.

Register today and invite your friends

WIDI Uhost is a crowd creation project.

It will be taken into production if we get sufficient registrants.
The target is 3,000!

Become part of the process and invite your friends.


What is WIDI Uhost?

WIDI Uhost is your 3-in-1 MIDI USB solution via Bluetooth

Bluetooth MIDI is the new wireless standard as approved by the MIDI Association.
Now you can connect all your – USB MIDI devices – via Bluetooth MIDI – with all your other MIDI devices!

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!

USB host to MIDI

Add Bluetooth MIDI to your USB MIDI controller Connect USB to MIDI wirelessly with WIDI Master and WIDI Jack


Automatic Bluetooth MIDI connection for Windows and macOS Unify your entire MIDI setup with advanced WIDI technology

Point to point 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 2x speed and 4x range

Ultra low latency

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

Turbo BLE Dongle

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

Automatic pairing

Plug-n-play with class compliant USB MIDI devices Pair automatically with other BLE MIDI

MIDI Clock and SysEx

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

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

What can you do with WIDI Uhost?

Fully Standalone. Completely Wireless.

100% BLE MIDI For Class Compliant USB MIDI Devices.


Pair your USB MIDI hardware wirelessly with any standalone MIDI device using one (1) WIDI Uhost unit and one (1) WIDI Master/Jack unit.

USB MIDI to Windows / Android / Chrome OS / Linux

Pair your USB MIDI hardware wirelessly with your Windows / Android / Chrome OS / Linux with two (2) WIDI Uhost units.

USB MIDI to Bluetooth MIDI

Pair your USB MIDI hardware wirelessly with any Bluetooth MIDI device using one (1) WIDI Uhost unit.

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.


Pair your USB MIDI hardware wirelessly with your iOS/MacOS device using one (1) WIDI Uhost unit. Or add a 2nd WIDI Uhost to benefit from even better performance and automatic pairing.

What can WIDI Uhost do for you?


Connect USB MIDI devices with Bluetooth MIDI operating systems

Plug WIDI Uhost with your class compliant USB MIDI device and transmit MIDI over Bluetooth between your MIDI hardware and BLE MIDI devices.


Connect MIDI devices with USB host

Plug WIDI Uhost in the USB host of your MIDI instrument and add advanced Bluetooth MIDI to your MIDI hardware.


Connect computer and smart device without Bluetooth MIDI

Plug WIDI Uhost in the USB port of your computer and ensure ultra-low latency Bluetooth MIDI without having to upgrade your PC, tablet or smartphone. It works with Windows, Linux, ChromeOS and even bypasses the Bluetooth MIDI limitations of iOS/MacOs.

Which MIDI Device Will You Connect?





USB Type-C host/ slave

MIDI IN/OUT (2.5mm jack/TRS), USB Type-C (power only)


Compatible MIDI devices

USB 2.0 Class Compliant MIDI devices

All MIDI devices with 2.5mm/3.5mm TRS (Type A/B), mini DIN, 5-pin DIN via optional cable

MIDI devices with 5-pin DIN OUT

Power supply

5v via USB

500mA for attached USB 2.0 device

5v/3.3v via MIDI OUT

5v via USB

5V/3.3V via MIDI OUT


Switch button

Switch button

TRS switch (Type A or B)

Switch button


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 Bluetooth

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

Compatible OS USB

iOS, macOS, Windows, Android, Linux, ChromeOS


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 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