Do You Need to Master Before Uploading to DistroKid?
Published · updated · by Loopin
DistroKid technically accepts unmastered files — it won't stop you. But every song around yours on a playlist has been mastered, and the difference is audible the moment two tracks play back to back.
What DistroKid actually checks
DistroKid's automated review looks for clipping, corrupt files, excessive silence and a handful of content policy issues — it does not check whether a track has been mastered, and an unmastered file will pass review and go live without any warning.
That's exactly why so many first releases sound quieter and less polished than they should: nothing in the upload process tells you anything is missing.
The real cost is loudness and clarity, not rejection
Streaming platforms normalise playback to roughly −14 LUFS, so an unmastered file sitting at −20 LUFS gets turned up automatically — but turning up an unbalanced mix doesn't fix muddiness or a harsh top end, it just makes those problems louder too.
The comparison that actually matters isn't loudness, it's clarity next to a mastered track in the same playlist. That's where an unmastered upload gives itself away immediately, even to a casual listener who couldn't tell you why.
Mastering also protects against clipping on encode
DistroKid converts your upload into multiple streaming formats, and a file with peaks too close to 0 dBFS can clip during that conversion even if it played back clean on your own system. A −1 dBTP true-peak ceiling during mastering is specifically there to leave that headroom.
This is a real, technical reason to master beyond just how the track sounds — it's protecting the file against a lossy conversion step you don't control.
If you're on a deadline
A fast, automatic master is still meaningfully better than none at all. Even hitting a rough −14 LUFS target with basic EQ correction closes most of the gap versus skipping mastering entirely — it doesn't need to be a perfect, hand-tuned session to matter.
The failure mode to avoid is not "imperfect mastering," it's uploading completely raw and finding out later that the track sounds thin next to everything else on a listener's playlist.
What to check before you hit submit
Confirm integrated loudness is close to −14 LUFS and true peak is at or below −1 dBTP — most mastering tools display both. If either is off by more than a couple of decibels, it's worth another pass before uploading rather than fixing it after the release is already live.
Listen back on a phone speaker specifically, since that's how a meaningful share of first listens actually happen, and it's the environment where an unmastered file's thinness shows up fastest.
Frequently asked questions
Will DistroKid reject an unmastered song?
No. DistroKid's review checks for clipping, corrupt files and content policy issues, not whether a track has been mastered. An unmastered file will pass review and go live -- it just won't sound as polished next to mastered releases.
What LUFS should I hit before uploading to DistroKid?
Around -14 LUFS integrated with a -1 dBTP true-peak ceiling matches what streaming platforms normalise to and leaves headroom for DistroKid's format conversion, which can clip a file with peaks too close to 0 dBFS.
Can I master a song quickly if I'm on a deadline?
Yes -- even a fast automatic master hitting roughly -14 LUFS with basic EQ correction closes most of the gap versus uploading completely raw. It doesn't need to be a long, hand-tuned session to matter.