Turn your stems into a finished mix
Upload your individual stems — vocals, drums, bass, guitars and more — and get back a balanced, professional stereo mix, powered by RoEx's AI mixing engine. No console, no engineer, no guesswork.
AI stereo mix from stemsGenre-aware balanceUploads deleted after processing
Leave any parts you don’t have empty — the AI balances whatever you give it.
Uploading…
Mixing your stems. This usually takes 1–3 minutes — keep this tab open.
Your recent results
Re-open and download anything you've made here. Results stay in your private library.
How it works
From raw stems to a finished stereo mix in three steps.
- 1
Upload your stems
Add a file for each part — vocals, drums, bass, guitars, other. Two or more stems is enough.
- 2
AI mixes & balances
RoEx's engine sets levels, panning, EQ and dynamics for your chosen genre, then sums it to stereo.
- 3
Preview & download
Listen to the finished stereo mix in the browser and download it — ready to master.
Why mix with AI
Balanced in seconds
Get a coherent, well-balanced mix without spending hours pushing faders.
Genre-aware
Choose a target genre and the engine shapes the balance to match its conventions.
Great starting point
Use it as a finished mix, or as a reference to guide your own.
Master next
Send the stereo mix straight to AI Mastering for a release-ready result.
One plan unlocks every AI Studio tool
A single subscription covers all 9 tools — mastering, lyrics, stems, instrumentals, chords, effects, stereo mixing, genre detection and trending edits. You get one shared pool of minutes to spend however you like.
Free
Try the whole studio and ship the occasional track.
No card required
- 10 shared minutes / month
- All 9 AI Studio tools included
- Upload MP3 & WAV, up to 60 MB
- Tracks up to 8 min each
- MP3 320 downloads
- TXT & SRT lyric export
- WAV downloads — 24-bit & 16-bit
- Commercial-use license
Creator
For active artists shipping music regularly.
Billed monthly
- 30 shared minutes / month
- All 9 AI Studio tools included
- Upload all formats, up to 150 MB
- Tracks up to 15 min each
- WAV downloads — 24-bit & 16-bit
- All languages + forced language
- Commercial-use license
- Top-up minute packs anytime
Studio
For studios, labels and high-volume catalogues.
Billed monthly
- 90 shared minutes / month
- Everything in Creator
- All 9 AI Studio tools included
- Files up to 400 MB & 30 min
- Batch processing
- Highest-priority queue
- Priority support
Need more minutes?
Top-up packs add minutes on top of your plan and never expire while you're subscribed.
Prices in EUR. Minutes are shared across every AI Studio tool and billed by processing time (heavier tools use more). Cancel anytime from your billing portal.
Free online AI mixing — mix your stems into a stereo track
Stereo mixing is the stage where your individual recorded parts — the stems — are balanced, panned, EQ'd and combined into a single, cohesive stereo track. This AI mixing tool uses RoEx's automatic mixing technology to do that for you: upload your stems, pick a genre, and get a finished, balanced mix back in minutes — no mixing desk and no engineer required.
If you've recorded vocals, drums, bass and instruments separately and need to mix a song online, this is the fastest way to a release-ready blend. It's built for producers, bands and home-studio artists who have their parts but want a fast, professional-sounding automatic mix without booking studio time.
How AI stereo mixing works
You upload each stem (vocals, backing vocals, guitars, bass, drums and other parts) and choose a target genre. RoEx's AI then makes the same decisions a mixing engineer would — setting levels, panning, EQ and dynamics appropriate for that style — and combines everything into a balanced stereo mix. Because it's genre-aware, a pop mix and a rock mix are treated differently, so the result fits the music.
Mixing vs. mastering
Mixing and mastering are two separate stages. Mixing blends your individual stems into one balanced stereo track; mastering then polishes that finished stereo mix for loudness and consistency across playback systems. For a complete in-browser workflow, mix here, then send the result to AI Mastering for the final polish.
Who uses online AI mixing
- Home-studio producers who want a fast, solid mix without expensive studio time.
- Bands & songwriters with recorded stems but no mixing engineer.
- Beatmakers balancing multitrack exports quickly.
- Content creators who need a clean stereo blend of separate audio parts.
Tips for the best AI mix
Upload clean, well-recorded stems (ideally WAV) with consistent levels and minimal clipping, and make sure each part is labelled correctly so the AI mixer can treat it appropriately. Pair this tool with the Stem Splitter to generate stems from a reference, then with AI Mastering to finish the track. Your uploaded stems are processed securely and deleted automatically afterwards, while the finished mix is saved to your private results history for easy re-download.
Skip the session — start with a finished track.
Mixing stems is powerful, but a custom production hands you a release-ready master. Browse ready-made songs or commission your own.
More tools in the AI Studio
Stereo mixing FAQ
Your individual stems — separate audio files for vocals, drums, bass, guitars and other parts. You need at least two; leave any slots you don't have empty.
Export them from your DAW, or use our Stem Splitter to separate an existing song into stems first, then mix them here.
It produces a balanced stereo mix. For final loudness and polish, send that mix to AI Mastering — mixing and mastering are separate stages.
Stereo mixing is the most compute-intensive tool, so each minute of audio uses more of your shared monthly minute pool than the lighter tools. You can add top-up packs or upgrade for a higher allowance.
MP3, WAV, FLAC, M4A, AAC, OGG and AIFF for each stem. WAV stems give the best result.
Yes. Your uploaded stems are used only for mixing and deleted automatically afterwards. The finished mix is saved to your own private history so you can download it again anytime, and you can delete it whenever you like.