The quality of your mix starts long before the mix engineer touches a fader. Properly prepared stems save time, reduce errors, and allow your engineer to focus on the creative work rather than troubleshooting file issues.
File Format and Settings
Export all stems as WAV or AIFF files at 24-bit depth minimum. Match the sample rate of your session — typically 44.1kHz or 48kHz. Do not convert sample rates yourself; let the mix engineer handle any necessary conversion with professional tools.
Labeling Convention
Use clear, consistent naming: "01_Kick_In.wav", "02_Kick_Out.wav", "03_Snare_Top.wav" and so on. Numbering helps maintain track order. Avoid special characters, emojis, or excessively long filenames that can cause issues across different operating systems.
Starting Point and Length
Every stem must start from the same point — bar 1, beat 1. This ensures everything lines up when imported into a new session. Also make sure all stems are the same length, extending to the end of the song even if that particular track ends earlier.
Processing Decisions
Remove any master bus processing before exporting. Leave individual track processing only if it is integral to the sound (like a specific guitar pedal chain or vocal effect that defines the character). When in doubt, export both a processed and dry version and let your engineer decide.
Include a Rough Mix
Always bounce a rough mix of how you envision the final product. This is the most important reference your mix engineer will use. Include notes about specific moments, levels, and effects you like in the rough.
Organize by Groups
Group your stems logically: Drums, Bass, Guitars, Keys, Synths, Vocals (lead and backing separated), and Effects. Put each group in its own folder. This organization shows professionalism and helps the engineer navigate your session efficiently.
Following these guidelines will ensure a smooth handoff and a better final product. At Kili Studio, we provide a detailed stem prep guide to every client before their mixing project begins.