A Free BandLab Mastering Alternative
Published · updated · by Loopin
BandLab Mastering is genuinely good and genuinely free, so “alternative” here does not mean “better at everything”. It means knowing what differs, so you can pick per track.
What BandLab does well
BandLab takes a stereo bounce, applies EQ, multiband compression and limiting in the cloud, and hands back an unwatermarked file in well under a minute. Its presets were built with working mastering engineers, and the intensity slider is a genuinely good idea — it gives you a “how hard should this be pushed” control instead of a number to argue with.
For a casual release it is hard to beat as a starting point. If it sounds right, use it. There is no prize for making this harder than it needs to be.
Where the differences actually are
The first is where the work happens. BandLab uploads your track to a server. Loopin’s mastering does not send your track anywhere — nothing to upload, nothing sitting in someone’s storage, and no waiting for a queue. If you are working on unreleased material or on a bad connection, that matters.
The second is limits. Both are free, but check whether a service caps how many tracks you can run or gates any presets behind a membership. Loopin’s eight feels are all available with no account, no credits and no cap on re-masters, which matters when you want to try the same track six ways before deciding.
Loudness is where most people get surprised
Every automatic mastering service targets a loudness. If you feed it an already-loud mix, the service will turn it down to hit that target, and the result will sound quieter than what you uploaded. That is correct behaviour — streaming normalises anyway — but it surprises people who expected “mastering” to mean “louder”.
When you compare two services, level-match them before deciding. The louder one wins every blind test regardless of quality. Match the loudness first and the comparison suddenly becomes about tone and transients, which is what you actually care about.
How to compare them properly
Run the same mix through both. Import both results into any editor, turn one down until they sound equally loud, and switch between them with your eyes shut. Listen for the drums first — the front edge of a snare tells you more about a limiter than anything else.
Then check the low end on a small speaker and the top end at low volume. If they still sound the same after all that, use whichever fits your workflow. They probably both do the job.
When neither is the answer
If a mix needs more than a couple of decibels of corrective EQ, no automatic service will save it — they are all designed for finished mixes with headroom. Fix the mix and re-run. Both services will sound dramatically better for it.
And if the record genuinely matters — a label release, something with a budget — a human mastering engineer is still the better call. Automatic mastering is a very good default, not a ceiling.
Frequently asked questions
Is BandLab Mastering actually free?
Yes, with unwatermarked output. Some presets and the tone controls sit behind BandLab Membership, so the free tier gives you a subset of the styles rather than all of them.
Why did my track come back quieter than I uploaded it?
Every automatic service masters to a loudness target, usually somewhere near -14 LUFS. An already-loud mix gets turned down to reach it. Streaming normalises playback anyway, so the quieter file is not actually quieter to the listener.
How do I compare two mastering services fairly?
Level-match them first. The louder file wins any blind comparison regardless of quality, so turn one down until they sound equally loud and only then listen for transients, low end and top-end harshness.