CME Introduces the H4MIDI WC and U4MIDI WC
High-Performance MIDI Interfaces for Musicians and Producers
H4MIDI WC: Advanced USB Host MIDI Interface

U4MIDI WC: Compact Hybrid MIDI Interface



CME Pro, the small-scale innovator and contributing board member of the MIDI Association, is pleased to announce the world’s first hybrid MIDI-thru-box with premium Bluetooth MIDI.
Following the successful launch of its WIDI technology, CME is taking the next step with the introduction of WIDI Thru6 BT as the latest addition to the WIDI family.
WIDI Thru6 BT lets you combine wired and wireless MIDI through this 2-in-6-out MIDI thru/split solution for studio, stage and mobile music making.
Simply merge and split 2 MIDI inputs to 6 MIDI outputs (through). Sync all your MIDI devices without data errors, without signal loss or drop-out for professional use on stage, in the studio and for mobile setups.
In addition, you can enjoy the convenience of advanced wireless MIDI as developed and designed by CME. This opens up a new world by adding motion controllers, wearables, smart devices and mobile devices to your MIDI setup.
Easily connect any MIDI devices with standard MIDI I/O via MIDI cables. Automatically connect to WIDI devices, standard Bluetooth MIDI controllers like the Xkey Air, and easily connect to iOS, macOS, Android and Windows (10/11).
And with advanced Bluetooth MIDI groups, you can connect up to 10 MIDI devices simultaneously through a single WIDI Thru6BT….
With WIDI Master you can connect all your MIDI devices point-to-point wirelessly. No matter if they are master or slave. For instance, you can connect two standalone MIDI hardware devices. Also you can pair your Bluetooth MIDI controller with any standalone MIDI instrument.
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 (switch WIDI Master to slave mode) and pair it with your iOS device or Mac (For Windows and Android we suggest to use with our WIDI BUD)
What makes WIDI Master the most advanced wireless MIDI solution in the market?
Automatic pairing!
WIDI Master automatically pairs with any Bluetooth MIDI device. No more manual scanning and pairing of your Bluetooth devices.
Ultra low latency!
WIDI Master reduces latency by directly embedding the BLE MIDI protocol in its firmware. Bypass your computer and benefit from fast wireless MIDI connectivity.
Secure connection!
WIDI Master delivers the most reliable wireless MIDI connection with our customised antenna design and automatic panic mode.
No external power!
WIDI Master is a fully standalone wireless solution. There is no need for an external power source or battery.
Trusted technology!
WIDI Master is the successor of Xkey Air and WIDI BUD. Our wireless MIDI technology is already trusted by thousands of professional musicians worldwide.
With WIDI Master we reduce latency by directly embedding the BLE MIDI protocol in the firmware of the device. You can bypass your computer and use wireless MIDI with low latency.
CME Blog
What about the specs?
When will WIDI Master be available?
During our preorder phase we sold over 2,500 WIDI Masters in about 21 days. Besides this, we are currently testing Prototype III (April. 2020). We expect to deliver the first batch by the end of May 2020.
Next steps will be introducing other members of the WIDI family, such as the HUB4 and UHOST and develop. those items further with our community. Also, we will start putting our distribution and retail network in place.
Furthermore, we are connecting with industry partners to embed our technology in future product lines. Are you interested? Do not hesitate to contact CME through info(at)cme-pro.com
MIDI hardware support has been available for a long time in Windows, Mac OS, iOS and most computer/tablet/smart phone platforms through USB, WiFi and even Bluetooth interfaces. But until now, there has been no standard mechanism to use MIDI devices with a Web browser or browser-based Operating System.
The Web Audio Working Group of the W3C has designed the Web MIDI API to provide support for MIDI devices as a standard feature in Web browsers and operating systems across multiple hardware platforms.
Google has led the way to support the inclusion of MIDI in the Web platform, both contributing to the specification and by shipping the first implementation of the Web MIDI API (in Chrome v.43 for Windows, OSX, and Linux), continuing to demonstrate the company’s interest in helping musicians interact with music more easily using the Web.
Being able to connect to local MIDI hardware will increase the creation and distribution of music-making applications for PCs, tablets and smart phones. It also means that popular MIDI hardware can be used to control any kind of software in the browser (using physical buttons and knobs instead of on-screen sliders, for example).
For hardware device makers, instrument control panels and editor/librarians which previously needed to be produced in multiple versions can now be implemented once in HTML5, and consumers can run them on any Web device (tablet, computer, or smart phone) and even “live” over the Web.
And finally, since the browser is connected to the Internet, musicians can more easily share data and even connect music devices over a network.
Web MIDI has the potential to be one of the most disruptive music technologies in a long time, maybe as disruptive as MIDI was originally back in 1983. Did Dave Smith and Ikutaro Kakehachi envision a world with 2,6 billion MIDI enabled smart phones. Definitely not!
Here is an interesting video of someone using a commercially available MIDI controller to play a browser based game. it just makes you think about all the possibilities in the future.
Here are some links to more Web MIDI resources.








