123 January 2020 - CME

Monthly Archives: January 2020

Wireless MIDI over Bluetooth

Beyond Bluetooth MIDI controllers: The WIDI Family

Low Latency Wireless MIDI

CME and the future of wireless MIDI

Today there are many musicians and producers that use a bluetooth MIDI controller. Ever since the introduction of the UFv2, CME has been in the game of innovating wireless MIDI solution. After the introduction of the portable Xkey and its successor the wireless Xkey Air, we received many requests for improving the connectivity of MIDI over Bluetooth.

WIDI delivers more than a Bluetooth MIDI controller

That is why we have been working on an entire new range of MIDI over Bluetooth adapters. With over 15 years of experience it is now possible to innovate alongside the technological developments of Bluetooth. With the arrival of Bluetooth 4.0 BLE it is now possible to transmit MIDI over Bluetooth with ultra low latency. Therewith the time has come to make MIDI over Bluetooth as effective as your traditional MIDI cables. It is time to get rid of those wires.

I’ve been spreading the word about the WIDI Master on different forums. I am excited. I may purchase a couple of units at the same time. Do I get a discount for each unit? Quote from registrant as provided by email

Searching for demand in eco-friendly delivery model

Currently we are in the process of validating our product ideas. Therefore we've opened up to you by introducing WIDI Master in such an early stage. We try to locate an exact demand. This way we can unroll an environmental friendly directly from our factory to your studio.

We want to ensure you the best price per unit. And reduce the amount of waste during the production process. That is why we kindly request you to register your interest.

Future applications beyond the Bluetooth MIDI controller

Looking ahead there are multiple applications we consider interesting. Therewith we already show you the direction we are thinking towards. Feel more than welcome to share your ideas, suggestions and concerns with us. In the end you are the one that can make this happen. If there is no interest from you, we eventually will not proceed to the manufacturing stage. Therefore we request you to think with us to move forward with wireless MIDI over Bluetooth.

  • MIDI hardware to MIDI hardware (wireless)
  • Bluetooth MIDI controller to MIDI hardware (wireless)
  • MacOS/iOS device to MIDI hardware (wireless)
  • MIDI USB to MIDI hardware (wireless)
  • Pedals to MIDI (wireless)
  • MacOS/iOS to multiple MIDI devices/hardwares (wireless)
  • MIDI hardware to multiple MIDI hardwares (wireless)

Future applications of wireless MIDI over Bluetooth

Looking at all these applications we have developed the following concepts.

WIDI Master First Design


  • Plug & pair with all new WIDI products and 3rd party standard Bluetooth MIDI devices automatically.
  • Switchable firmware is compatible with both Bluetooth MIDI Master and Slave mode.
  • Smart algorithm for error correction with automatic all notes-off PANIC protection.
  • Powered from MIDI ports.
  • Target retail price: US$ 59
MIDI USB to Bluetooth MIDI


  • USB Host transform MIDI message from any USB MIDI controller to Bluetooth MIDI.
  • Powered from USB and can be used as a standalone device.
  • Compatible with all new WIDI products and 3rd party standard Bluetooth MIDI devices.
  • Target retail price: US$ 59
Bluetooth MIDI Controller Pedalboard


  • Convert 3 control pedals to Bluetooth MIDI.
  • Universal pedal detection (switch and continuous). Compatible with most existing pedals on the market.
  • Powered from USB and can be used as a standalone device.
  • Target retail price: US$ 59


  • Up to 4 Bluetooth MIDI connections simultaneously with ultra low latency.
  • USB Type-C can be used as computer USB-WIDI interface and USB power supply.
  • USB Host can be used as standalone USB-WIDI interface for USB MIDI controllers.
  • Target retail price: US$ 159
Wireless MIDI Bluetooth

Wireless MIDI: The legacy of CME

Bluetooth MIDI

CME and over a decade of wireless MIDI

With over 15 years of dedicated development we have earned our stripes. Today we have come to a point that we can offer a complete and wireless solution for all your MIDI devices. Now you can connect your bluetooth MIDI keyboard to your MIDI synthesizer. It is also possible possible to work wirelessly on stage and in the studio with ultra low latency. Furthermore, our innovative panic mode makes sure your connection will be restored automatically without the hanging of notes and other crazy MIDI glitches.

In retrospect CME has been working on wireless solutions ever since 2005. That is why it is time to give you a complete overview of what we have done up until now. We present to you the CME legacy.

I’m contacting you on behalf of my company. We’ve just recently launched our first product. It is a Bluetooth MIDI controller, and we see great potential in the WIDI Master. We would like to discuss potential business collaboration. Quote as taken from an email from an industry partner


CME WIDI-X8 MIDI: Wireless MIDI transmission

In 2005 the WIDI-X8 MIDI Interface was released. The transmission range was up to 80 meters with a built-in USB MIDI interface. This unit was sold worldwide and used by thousands of professional musicians. It had powerful error correction with automatic note-off and on-line detection.


WIDI-XU: World's first wireless MIDI "dongle" interface

In 2006 the WIDI-XU was released. It was the world's first “flash-disk-like” wireless MIDI interface. With one WIDI-XU one could connect multiple wireless MIDI devices.

CME UFv2: Wireless MIDI keyboard

CME UFv2: Wireless MIDI keyboard

In 2007 CME released the UFv2 MIDI keyboard. It was the first master keyboard with a built-in MIDI interface that operated wirelessly.

CME Xkey Air

Xkey Air: Bluetooth MIDI keyboard

In 2015 the Xkey Air was introduced. The most popular mobile MIDI keyboard in the world. This was caused by the fact that it offered a built in BLE (Low Energy Bluetooth) MIDI feature. As a result the XKey Air is used by mobile music makers and keyboardists both on the road and in the studio.


WIDI BUD: Bluetooth Central Role Adapter

In 2016 the WIDI BUD was developed as an accessory for the Xkey Air. Therewith WIDI BUD was the first Bluetooth MIDI adapter with “Bluetooth Central Role”. With this musicians now could pair any Bluetooth MIDI controller with all computers and mobile operating systems. 

WIDI Master

WIDI Master: MIDI over Bluetooth Adapter

Today (2020) we are developing the latest addition to the wireless family. This Wireless MIDI over Bluetooth Adapter has the ability to connect all you MIDI devices. Without computers. Without cables. Therewith it is the first step in developing a new range of wireless MIDI over Bluetooth solutions.

WIDI Master Bluetooth MIDI

WIDI Master: What can it do for you?


WIDI Master: The wireless MIDI over Bluetooth adapter.

With WIDI Master you can connect all your MIDI devices without wires. No matter if they are master or slave. For instance, you can connect two standalone MIDI hardware devices by using two WIDI Masters. Furthermore, you can pair your Bluetooth MIDI controller with any standalone MIDI hardware device with one WIDI Master. Also, you can play your standalone MIDI hardware with any iOS device or Mac by using one WIDI Master. In this last case WIDI Master will switch automatically to slave mode using our smart algorithm.

In addition, for Windows and Android users, you can use our previous WIDI BUD to fully enjoy these benefits or wait for the next member of the WIDI family to arrive: WIDI uHOST!

What is so special about this MIDI over Bluetooth solution?

We offer a complete solution that will save you time and expand your opportunities with MIDI. For instance, you can pair your MIDI devices automatically. Also, we have built a secure connection implementing the Bluetooth MIDI standards as approved by the MIDI association

Bluetooth MIDI has originally been developed by Apple, WIDI will operate with Apple seamlessly. On Windows PC Bluetooth MIDI requires your music software to implement Microsoft’s new UWP API which includes BLUETOOTH MIDI class compliant driver. You need to be able to set that functionality in the software you use.

How will Bluetooth MIDI and WIDI Master work for Windows and Android?

Is WIDI Master and Bluetooth MIDI reliable?

We have tested and selected the most advanced Bluetooth module with optimized antenna design to get reliable connectivity. Therewith WIDI Master delivers ultra low latency. Our dedicated BLE MIDI protocol is directly embedded in its firmware. Now you can bypass your computer's operating system (OS). And benefit from fast and reliable MIDI connectivity.

That is why in the eventual design the WIDI Master turned out to be a bit larger compared to the initial drawings. This had to be done to ensure that WIDI Master can take over the full control and function without any computer or other operating system that is is capable now of replacing.

WIDI Master is in essence a point-to-point solution. It is like a ‘virtual MIDI cable' allowing you to connect one device with one other. That said, technically it is possible to connect one master (or central point) and connect multiple slaves. But, we will need to test it more to ensure we deliver a suitable solution before we can make an official statement on this.

Also, we are working on a controller app, that will make it a lot easier to pair and control more complex WIDI Master setups. This will make life much easier when looking at these kind of setups. We will keep you posted on the progress on this matter.

I am excited that you are planning to make a tiny Bluetooth MIDI device that will be able to connect a controller to a synth. Quote as provided by a new registrant

The WIDI Master is a Bluetooth MIDI adapter. It implements BLE5 (Bluetooth 5) which improves the performance compared to our previous products that implement BLE4. In short, you are now able to enjoy an improved connection, lower latency, better reach and more stable jitter.

We offer a fully standalone wireless solution. Therefore, there is no need for an external power source or battery. WIDI Master uses Bluetooth Low Energy (BLE) technology. That is why it is completely powered by your MIDI hardware. Now, you just power up your device and enjoy the freedom of WIDI Master.

What can WIDI do for you?

  • Point to point 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 4ms. Automatic transmission optimization with smart algorithmic technology
  • Automatic pairing: Setup instantly. Connect easily. Intuitive plug ‘n play with automatic master/slave switch and default pairing memory
  • MIDI Clock and SysEx: Sync your drum machines, step sequencers and arpeggiators. Transmit all MIDI messages over Bluetooth

How many WIDI Masters do I need?

  • MIDI to MIDI: You can pair two standalone MIDI hardware devices bu using a direct connection between two (2) WIDI Masters.
  • Bluetooth (BLE) to MIDI: You can connect your bluetooth MIDI controller with any standalone MIDI hardware device by using one (1) WIDI Master that connects with your Bluetooth MIDI controller or or other similar device.
  • MacOS/iOS BLE to MIDI: You can play your standalone MIDI hardware (automatic switch to WIDI Master slave mode) and pair it with your iOS device or Mac (For Windows and Android we suggest to use with our WIDI BUD or our future WIDI uHOST by paring it with one (1) WIDI Master.