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V3 Sound


V3 Control USB-Receiver Bluetooth


Soft- and Hardware

The software application, V3 CONTROL, is available free for both Android tablets and Apple iOS tablets in your online app store. A Bluetooth connection makes the wireless data exchange between the app and your sound expander possible.

V3 Control only works with tablets, not with phones.

The product V3 CONTROL consists of:

  1. The software application V3 CONTROL -  Android  (OS 5 and higher) or Apple iOS (OS 9.3 and higher. List of compatible models are online)
  2. a USB stick with an integrated Bluetooth receiver that plugs into the USB port on the back of your sound expander
  3. a USB cord extension (15 cm) is also included, to make the connection easier

Now you can play your MIDI keyboard directly through MIDI IN on your sound expander. There is no latency between playing a key and the sound of the tone from the expander.

MIDI Functionality

The app gives your MIDI instrument the functions of a master keyboard. You can assign up to six sounds to a MIDI channel (layer).

The app interface is set up in these groups: UPPER, LOWER, BASS, SOLO, LEAD, SPECIAL, and DRUMS. You can assign a certain number of sounds to each group. Each group is connected to a specific MIDI channel. The group names are simply for easy identification and organization. You are free to choose which sounds you want to use in each group, regardless of its name.

Channel 1 Upper 6
Channel 2 Lower 2
Channel 3 Bass 3
Channel 4 Solo 1
Channel 5 Lead 1
Channel 6 Special 1
Channel 10 Drums 1

The scenes allow you flexibility with the sounds. You can use up to 4 scenes in each registration. In a scene, you can save on/off commands in order to make sounds active (audible) or inactive (mute). This makes sound changes during a song fast and easy. Simply select the scene, and voilà, you have new instrumentation! Learn more in the V3 SOUND CONTROL user manual.

It is not possible to change the scenes if you want to continuously change the volume with the MIDI controller 11.
For example the volume swell of an organ, or the bellows dynamics of a MIDI accordion.

Settings and Registrations

The app offers simple menus from which you can select sounds and adjust the following sound parameters:

  • Volume, Panorama
  • Reverb, Chorus
  • Attack, Decay, Release
  • Transpose, Fine Tune
  • Cutoff, Mono/Poly
  • Audio outputs: MAIN or AUX

All of these settings are available for 16 sounds per registration. The term registration is used to describe the entire set of assignments for the sound expander. A registration – meaning all of the settings you put in place – can be saved in the app and loaded onto the sound expander as needed – wirelessly using Bluetooth.

The app has 300 memory slots available for importing and exporting registrations. An expanded copy function allows you to copy individual sounds as well as individual parameters among registrations.


The app is compatible with the following sound expanders:
Grand Piano XXL | Accordion Master XXL | Sonority XXL.

All V3 sound expanders with triangular designs can be upgraded.

(USB Receiver, USB cord extension, and APP)

App Android (OS 5 and higher) 
App Apple iOS (OS 9.3 and higher)  

V3 CONTROL - User Manual