What Is Stem Mastering?
Stem mastering is a more advanced and flexible form of mastering. Instead of processing a single stereo mix, the song is split into grouped tracks called stems, such as vocals, drums, bass or instruments.
This allows the mastering engineer to make more detailed adjustments without having to redo the entire mix. It is the most precise version of mastering.

How Is Stem Mastering Done?

• Preparing the Stem Files:The song is exported in groups such as vocals, drums, bass or synths, all starting at the exact same point.
• Balancing and Tonal Shaping: Each group can be adjusted individually. If the vocals are too loud or the bass is too heavy, they can be corrected separately.
• EQ, Compression and Limiting: Each stem is processed individually. Afterward all stems are combined and the final mastering is applied, resulting in a cleaner and more controlled outcome.
• Stereo Width and Ambience: The stereo image is optimized. Vocals can stay centered while instruments can be widened.

Stem mastering allows powerful adjustments without returning to the full mixing stage.