Stem mastering.
Stem mastering works from a handful of grouped stems instead of one stereo file. It gives the master more control when the balance isn't fully locked, without going back to a full mix.
The details
What stem mastering is
Instead of a single stereo mix, you send four to eight grouped stems, for example drums, bass, music, vocals and effects. I master from those groups, so I can lift the kick without lifting everything else, or tame a harsh vocal without dulling the whole track.
When it makes sense
- The low end between kick and bass isn't quite settled
- The vocal sits slightly too far forward or back
- You produced and mixed the track yourself and want more control than stereo mastering allows
When stereo mastering is enough
If your mix is balanced and you're happy with it, a stereo master is the better choice. Stem mastering isn't an upgrade by default, it's a different tool for a specific problem. Not sure? Send the stereo mix and I'll tell you honestly which one your track needs. More in stem mastering vs stereo mastering.
How to prepare stems
- Group similar parts: all drums together, all bass together, and so on
- Export every stem from the same start point, at the same length
- WAV or AIFF, 24 bit, at your session sample rate
- Remove any processing on the master bus
- Name each file clearly, for example Artist_Track_Drums.wav
- Include your stereo mix as a reference
Full walkthrough: how to export stems from any DAW.
Questions
How many stems should I send?
Usually four to eight groups. Fewer groups keeps your mix decisions intact, more groups gives more control.
Should I keep effects on my stems?
Yes. Print reverbs and delays with their groups or as a separate effects stem. Only remove processing on the master bus.
Should I send my stereo mix too?
Yes. It shows me the balance you intended, so the master starts from your decisions, not mine.
Is stem mastering the same as mixing?
No. Mixing works from every individual track. Stem mastering works from a few groups and keeps your mix.
How many revisions are included?
One, the same as stereo mastering.