Mastering Suno Stems: After Advanced Split, Do This

Suno upgraded its stem separation: Advanced Split isolates close to a
hundred instruments, "Split from Mix" pulls any voice or instrument out of a
finished mix, and the classic Auto Split still gives you 12 stems. The stems
got noticeably cleaner — and thousands of creators suddenly have material they
can work with properly. One question remains: how do you turn a folder of
stems into a release-ready track?

Why stems ≠ a finished track

Separated stems are not a studio multitrack. Even clean Advanced Split output
carries two systemic issues:

• Separation artifacts. The neural net slices the spectrum, leaving
  "musical noise" at instrument boundaries: isolated time-frequency spikes,
  metallic ringing on cymbal tails, watery reverb smearing. Barely audible per
  stem — mud in the sum.
• Drifted balance. The sum of stems does not equal the original mix: every
  stem comes back at its own level, so naive summing changes both the tonal
  balance and the loudness.

From Suno stems to a release

1. Download the stems from Suno (Advanced Split needs Premier; Auto Split
   is available more widely).
2. Upload them to stem mastering in Magic Master — up to 8 tracks:
   vocals, drums, bass, music. Set relative gains if you want a different
   balance (a couple of dB more vocal, for instance).
3. Separation artifact cleanup is on by default for stems: it removes
   isolated separation spikes after the gate without touching the music. It is
   the same technology as our AI-trace cleanup, tuned for the "musical noise"
   of Spleeter/Demucs/Suno.
4. Pick a preset and a target. From there it is regular mastering: a LUFS
   target per platform, True Peak ≤ −1 dBTP, honest A/B and metrics in the
   result.

What you get

One release-grade file: your stems summed with your balance, artifacts cleaned,
loudness matched to the platform of your choice — Spotify to VK Music. Download
as WAV, MP3 or FLAC — switchable after mastering.

FAQ

How many stems can I upload? Up to 8 per master, 800 MB total.

Does it cost more? Stem mastering is 1 token — same as a regular PRO
master.

What if my stems are not from Suno? Any stems work: Udio, your DAW, or
separators like Demucs. Cleanup can be switched off for studio stems.

Start in the app — switch to stem mastering mode and drop your tracks.
For AI-trace cleanup of regular (non-stem) tracks, see the
dedicated breakdown.