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NUO-STEMS v2 software automatically converts your audio files to 4-part STEMs for Traktor Pro: drums, bass, melody, vocals using Machine Learning (AI).

Demo Included: only 20 seconds (from the middle of the track) are processed

v3 beta
now available

New demucs v4 algorithm, design,  GPU acceleration support & more…

Machine Learning Power (AI)

NUO-STEMS is software which lets you convert your existing MP3/WAV/other tracks to .STEM tracks which are used by Traktor Pro DJ software.
It uses "facebook demucs v3" under the hood.

.STEM structure

.STEM tracks consist of 4 parts: -drums -bass -other (melody, etc) -vocals

Traktor Pro full compatibility

NUO-STEMS was designed specifically for Traktor Pro DJs.
You can convert your entire collection of audio files completely locally on your machine

NUO-STEMS integrates these things to work:
– Machine Learning (AI) provided by Facebook Demucs v3 (https://github.com/facebookresearch/demucs)
– Native Instruments docs to bundle everything inside .stem.m4a file

Comparison to other software

How to play with STEMS using Traktor Pro


NUO-STEMS was tested on both on Mac OS 10.14+ and Windows 7+.

You can download and use NUO-STEMS without any other limitations.
Demo is free.

Select any numbed of tracks that you want to process.

NUO-STEMS will analyze the nested structure of this folder and output the same structure with same relative file locations and sub-folders structure)

NUO-STEMS supports practically any audio file format. And if you find that it doesn’t – it’s gonna be added in next update! Don’t hesitate to contact and report the issue.

Program will analyze output folder structure for .stem.m4a files and skip them if needed

Yes, your lovely mp3 cover-art pictures will be transferred to .STEM files!)

Lovely icing on the cake – “Traktor Utility” to transfer HotCues, BeatGrid, BPM, Musical Key, Rating, Title, Artist, Album, Genre from original tracks to STEM versions (transfer is done using collection.nml – Traktor collection file)

You can now change individual stem (e.g. drums) colours for all STEM files in your collection. This is especially useful when using Traktor S4 mk3 with color pads. Default color of all 4 stems is now set to violet/purple.

Demo Included: only 20 seconds (from the middle of the track) are processed


Official Traktor Facebook page mentions


You can choose one of these options. For example, if you purchase perpetual license – you don’t need to subscribe to Patreon. Vice versa, if you are not yet ready to buy perpetual license – you can just subscribe to Patreon for $5 per month and get full access to NUO-STEMS. You are free to switch options any time.

Before purchase you MUST install Demo version to see if software works with your system specifications. There are cases when user’s PC specs are too low to run NUO-STEMS

$33.99 for v2 & v3 perpetual license

Buy to get full access (unlimited) for v2 & v3. If you previously purchased v1 – you’ll need to buy v2 separately

You can always contact me on Facebook for special deals and offers 😊

Hardware UUID info


$5 per month​

Subscribe to Patreon for $5 per month to get full access to NUO-STEMS. This gives access to both v1, v2 & v3 of NUO-STEMS.


The main communication channel is Facebook.

You can also find Facebook messenger button in the bottom right corner of this website

Demo Included: only 20 seconds (from the middle of the track) are processed

Download (Demo included)

Digital download includes Demo-version which has the limitation to process only 20 sec of each track, starting from the middle of particular track. There are no other limitations. You can unlock full access by buying NUO-STEMS or subscribing on Patreon.

Latest Version: 2.0.0

NUO-STEMS v2 is no longer available - please download the latest v3

Mac OS 10.14-13.0
13.1 Ventura not tested yet

If your Mac has 8GB of RAM – please make sure to close all other RAM-intensive applications (e.g. web-browser)

Windows 7+

Minimal requirements: 8 GB of RAM + swap increased in most cases (instructions). Make sure to install all the latest Windows updates.

Some Windows users might also need to install these updates for NUO-STEMS to work:

You can try using Installer for Windows 10 & 11. It is expected to have some pop-up errors. However, they are so far not affecting the quality of separation or other features.


You can still purchase & download latest v1 version of NUO-STEMS, which uses “deezer spleeter” algorithm / Machine Leaning.