FAQ – software & support
This FAQ covers the company SOH Sound & Lights, the DMX Music Visualization software, licences and prices, the DMX PIPE hardware, downloads, technical support and equipment service. Every section and answer has its own anchor, so you can link directly to any individual question on this page.
About SOH and contact
What does the company SOH Sound & Lights do?
SOH Sound & Lights s.r.o. is a Prague-based company that develops and sells hardware and software for lighting control – above all the software DMX Music Visualization and the USB-DMX512 interface DMX PIPE – and also rents out professional sound and lighting equipment. SOH has been a reliable partner in the rental and sale of professional technology for 25 years and has provided complete equipment service since 1999. Products are sold through the e-shop at eshop.soh.cz.
Where is SOH located and what are the opening hours?
SOH Sound & Lights s.r.o. is located at Antala Staška 242/14, 140 00 Prague 4, Czech Republic. Standard opening hours are Monday 9:00–18:00, Tuesday to Friday 10:00–18:00, Saturday closed and Sunday 15:00–18:00. Customers can park comfortably right next to the entrance – SOH has three parking places reserved for customers. Company identification: IČ 69045437, VAT ID CZ8010220383.
How can I contact SOH by phone or e-mail?
For the e-shop, software and sales call SOH Sound & Lights at +420 272 272 500 or write to eshop@soh.cz; for equipment rental call +420 272 272 501 or write to pronajem@soh.cz. From abroad you can call +44 870 295 8093 (United Kingdom) or +1 323 250 2777 (USA). Invoicing is handled at invoicing@soh.cz and graphic materials at design@soh.cz.
Does SOH also rent out sound and lighting equipment?
Yes. SOH Sound & Lights runs a rental service for professional sound and lighting equipment in Prague 4 (phone +420 272 272 501, pronajem@soh.cz). A rental lasts up to 56 hours without any price increase, prices include 21% VAT, there are no cancellation fees, and cables and adapters are free of charge. Detailed questions and answers about renting are collected in the separate rental FAQ.
DMX Music Visualization – basics
What is the DMX Music Visualization software?
DMX Music Visualization is software developed by SOH that controls lighting equipment directly by the music signal in real time. Using the internationally patented LTCA technology, it analyses the sound and automatically generates a dynamic light show over the DMX512 protocol, the most widespread lighting standard. The software runs on an ordinary Windows PC, and the free version controls the first 24 DMX channels. It can be downloaded at soh.cz/en/download/music-visualization.
How does controlling lights directly by music work and is it patented?
The software DMX Music Visualization by SOH uses LTCA, an internationally patented technology for direct central control of an entire lighting rig purely by the music signal (patents CZ 301933 B6, WO 2010/048907 A1 and GB 2479280 A). The system works fully autonomously without an operator, controls dozens of effects individually at the same time, recognises different passages and music styles by itself, and reacts instantly to unpredictable changes in the music.
What are the minimum system requirements for DMX Music Visualization?
The software DMX Music Visualization needs a CPU of 1 GHz or higher, Windows 7 or higher (Windows 10 or 11 recommended), a USB port (1.1, 2.0, 3.0 and compatible) and an internet connection to download the distribution. An ordinary PC with a sound card is enough for full operation: the music is analysed in the background from any sound card input or output – microphone input, line input or WASAPI.
Can I try DMX Music Visualization for free?
Yes. The free version of the software DMX Music Visualization controls the first 24 DMX channels with up to 8 music features and can be downloaded at soh.cz/en/download/music-visualization as an MSI installer or a ZIP archive. The free version is not intended for commercial use; for commercial operation choose one of the paid licences, which start at CZK 1,990.
Version 4.0 and AI features
What is new in DMX Music Visualization 4.0 (2026)?
DMX Music Visualization 4.0 (2026) brings AI integration: scenes, chases and entire projects can be created through the built-in AI chat with the Google Gemini model, or any other AI connected via API. New fixtures can be imported by photographing the manual, uploading a PDF or from the Avolites .d4, GDTF and Daslight formats. Version 4.0 also adds 3D visualisation through the GDTF Stage Studio database with over 8,500 devices and WASAPI audio analysis in Shared and Exclusive mode.
How can I create a light show in a few clicks with AI?
In DMX Music Visualization 4.0 you first pick your lights in GDTF Stage Studio, add them to "My List" and export the DMX patch of your lights with the Export TXT button. Then you simply drag the downloaded TXT file into the DMX Music Visualization program, choose File – Design New Project and then File – Generate Scenes with AI. The AI automatically creates scenes, movements and colour changes for your entire lighting setup.
How do I import new lighting fixtures into the software?
You can add a new fixture to the software DMX Music Visualization in several ways: by taking a photo of its manual, by uploading a scanned PDF or JPEG, or by importing from the extensive Avolites (.d4) database, the GDTF standard or Daslight. The built-in AI analyses the DMX channels by itself and adds the light to your project. The software can also generate fixture definitions into the GDTF and Avolites formats, and this is not limited even in the free version.
Does the software support Art-Net, MIDI and LED walls?
Yes. The software DMX Music Visualization supports Art-Net with up to 3,072 channels (6 universes), full MIDI input and output for triggering scenes with MIDI controllers, and control of LED walls and RGB strips by playing BMP images with RGB/BGR/GRB mapping onto selected fixtures, including a preview of the resulting colours (LED Color Preview). The scene can also be controlled manually, for example with configurable DJ buttons or a wireless controller.
Can the software be controlled from an external application or sensor?
Yes. The software DMX Music Visualization can communicate with an external application via Windows messages, load scenes from an HTTP or FTP source and accept control from an external sensor. A technical guide is published on the page Controlling DMX Music Visualization with external data in the support section of soh.cz, and setup can also be consulted by phone at +420 272 272 500.
Licences, prices and upgrades
How much does a DMX Music Visualization licence cost?
Licences for the software DMX Music Visualization cost: Free – 24 DMX channels at no cost (non-commercial); 16/30 Lite – CZK 1,990; 48 Basic – CZK 3,890; 256 Standard – CZK 12,520; 512 Art-Net – CZK 18,720; 1024 Art-Net – CZK 27,120 (including 2x DMX PIPE); 3072 Art-Net – CZK 48,200 (including an Art-Net DMX512 interface). The paid licences from 16/30 Lite up to 512 Art-Net include a DMX PIPE interface. Order at eshop.soh.cz.
Can I upgrade my DMX Music Visualization licence later?
Yes, paid upgrades between licences of the software DMX Music Visualization are available in the e-shop at eshop.soh.cz. For example, the upgrade from Free (DMX PIPE) to 16 Lite costs CZK 800, from Free to 48 Basic CZK 3,650, from 48 Basic to 256 Standard CZK 7,000 and from 256 Standard to 512 Art-Net CZK 7,600. You can therefore start with a small licence and extend it as your lighting rig grows.
How much does the AI Chat plugin cost?
The AI Chat plugin for the software DMX Music Visualization costs CZK 1,590 for the 16/30 Lite and 48 Basic licences (with a new licence) and CZK 5,900 as an upgrade for the 256 Standard, 512 Art-Net and 1024 Art-Net licences. The plugin enables creating and editing scenes, chases and entire projects through the integrated AI chat with the Google Gemini model. Both variants are sold at eshop.soh.cz.
Hardware and SOH products
What hardware do I need to connect the computer to DMX lights?
To connect a computer running the software DMX Music Visualization to lighting equipment you need a USB-DMX512 interface – most often the DMX PIPE by SOH, which plugs into a USB port and controls up to 512 DMX channels in both directions (transmit and receive). The drivers are part of the installation package, and the interface can be bought at eshop.soh.cz; higher licences include a DMX PIPE in the price.
Which DMX512 interfaces does the software support?
Besides Art-Net, the software DMX Music Visualization supports the SOH interfaces DMX PIPE and USB-DMX512 Module as well as third-party converters: ENTTEC Open DMX USB, ENTTEC DMX USB Pro, Eurolite USB-DMX512, JMS USB2DMX OPTO, JMS USB2DMX PRO, nvent Open CoreDMX USB, OpenDMX Interface (OpenDMX.de), Yarilo Mini Open DMX and Yarilo Open DMX, plus interfaces compatible with the FTDI FT232RL and FT232BM chips.
What other products does SOH make and offer?
Besides the software DMX Music Visualization and the DMX PIPE interface, SOH offers the USB-DMX512 Module (the bare converter for integration into your own applications and devices), DMX512 PC Control, DMX Light Control, Dip Switch, DMX Windows CE, the DMX LED Dimmer for high-power LEDs, the DLP/LCD Effects Projector software, 3D Visualization and Grant VJ MIDI, plus custom NEON, LED strips and LED facades. The full overview is at soh.cz/en/products.
Where can I buy SOH products?
SOH hardware, software licences and accessories are sold in the e-shop at eshop.soh.cz. For consultation and orders call +420 272 272 500 or write to eshop@soh.cz. You can also visit SOH Sound & Lights at Antala Staška 242/14, Prague 4 – open Monday 9:00–18:00, Tuesday to Friday 10:00–18:00 and Sunday 15:00–18:00, Saturday closed, with three customer parking places next to the entrance.
Downloads, support and service
What can I download from soh.cz?
The download hub at soh.cz/en/download offers the demo and installers of the software DMX Music Visualization (MSI installer, ZIP archive and older versions), drivers for the DMX PIPE and the USB-DMX512 Module, other software such as DMX512 PC Control, DMX Light Control and Dip Switch, and manuals. The DMX Music Visualization installation package also contains DMX512 Light Control Full Version, DMX512 PC Control Free Version and the DMX PIPE drivers.
Where do I find drivers and which operating systems are supported?
Drivers for the DMX PIPE interface and the USB-DMX512 Module are available on the Drivers page at soh.cz for Windows, macOS, Linux and Windows CE. If you use the software DMX Music Visualization, you do not need to download the drivers separately – they are already included in its installation package.
Where do I find manuals, guides and tutorial videos?
Manuals for the software DMX Music Visualization, the DMX PIPE interface and the USB-DMX512 Module are on the Manuals page at soh.cz. The Support section further contains sample and tutorial videos, a video archive, finished projects, theory and hardware diagrams, as well as a guide to creating your first project and the manual as a PDF download.
What warranty and service does SOH provide?
SOH has provided complete equipment service since 1999. Warranty service is completely free of charge for two years, and SOH also provides post-warranty service and maintenance. A large stock of spare parts is kept permanently on hand, and some parts can be bought directly in the e-shop at eshop.soh.cz. Installation and setup of the software DMX Music Visualization for your built-in equipment can be arranged by phone at +420 272 272 500.
