Mastering for engineers and freelancers: a fast first pass for client work.
Preview a client track at matched loudness for free, then master and download as much as your week needs on Unlimited. Honest about what automatic mastering does and does not do.
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Listening to your track…
Measuring, correcting and building your mastering chain.
Fine-tune
Choose a feel
Eight ways to make it sound finished
Each style is a different finished sound, from warm and rounded to loud and club-ready. Drop in a track to hear them on your own song.
Artists are finishing songs with Loopin
Notes from producers, beatmakers and songwriters who sent us a message after mastering a track.
Loopin free mastering helped me hear my song as a finished track instead of another rough export. The vocals felt clearer, and the overall balance worked better on my headphones. Having online mastering available while I finish a release makes the process feel much less intimidating.
Maya BennettIndependent artistI make original background music for my YouTube videos, and Loopin mastering helped the track feel more consistent beside the rest of my edit. The simple upload process was a big plus. Free online mastering is helpful when I am working with a small budget.
Ethan KimYouTube creatorThe stereo image was the first thing I noticed on my electronic track. The synth layers felt easier to follow, while the main elements stayed focused. Loopin online mastering gave me a polished listening version without turning a quick test into a complicated studio task.
Owen MillerElectronic producerLoopin fits nicely into my daily production routine. I can check a master after finishing a mix and listen again with fresh ears. For an independent producer, having accessible online mastering makes it easier to keep moving instead of leaving every nearly finished track sitting in a folder.
Marcus ReedIndependent producerI tested Loopin mastering on a trap beat with a deep bass line and bright hats. The result felt tighter and easier to listen to. I still checked the low end carefully, but the free mastering workflow made sharing a polished preview much quicker.
Mateo RiveraTrap producerI liked how my dance track felt more cohesive after using Loopin. The kick, bass, and brighter layers sounded more connected in the version I downloaded. Online mastering for producers is especially useful when you want a quick comparison before making the final decisions on a mix.
Leila HaddadDance music producerI make short music pieces for videos, and Loopin free mastering helps me finish them with less friction. The audio felt more consistent on the track I tested. I appreciated having an online tool that let me spend more time on the actual creative work.
Riya KapoorContent creatorI used Loopin online mastering to check a track after several rounds of mixing. The stereo presentation felt more organised, and the overall sound was easier to assess. Having a quick mastering option helped me stop endlessly tweaking and start listening to the song as a whole.
Adrian ChenHome studio producer
I tried Loopin online mastering on a beat with heavy drums and a soft melody. The result felt more balanced without losing the groove I liked. For quick beat mastering before sharing an idea with an artist, this is a useful part of my workflow.
Jordan EllisBeatmakerI produce in a bedroom, so I like having another way to check how my mix comes across. Loopin online mastering made this track feel more cohesive. It did not replace getting the mix right, but it helped me feel more confident about the final export.
Arjun MehtaBedroom producerI am still learning music production, and mastering used to feel like a step I could not approach yet. Loopin free mastering made it easier to hear a finished version of my song. I appreciated the straightforward process and having something useful to compare with my original.
Sofia RamirezMusic hobbyistI used Loopin free online mastering on a pop demo with layered vocals. The result felt clearer and more connected, especially when the chorus arrived. I liked hearing the song with a more finished presentation before sending it to the people helping me with the release.
Lily BrooksPop artistAfter recording a cover at home, I wanted the final audio to feel a little more complete. Loopin free mastering helped bring the vocal and backing track together. The process was easy enough that I could focus on the performance instead of getting lost in extra settings.
Isabel SantosCover singerI do not have a big music budget, so finding free online mastering was a welcome discovery. Loopin helped my demo sound more presentable before I shared it. I liked that I could hear the difference for myself and keep learning from the comparison.
Nia CarterStudent musicianThe vocal texture matters a lot in my songs, so I paid attention to how the master handled it. Loopin gave this mix a smoother, fuller presentation while keeping the mood intact. Free online mastering made it easy to test a version before committing to the release.
Andre MorganR and B artistLoopin free mastering helped me get a track out of the unfinished stage. Hearing a polished version gave me the confidence to share it and gather feedback. I liked how accessible the process felt, especially when I was handling the recording and production on my own.
Adam RahmanIndependent musician
My acoustic demo needed a little polish before I felt comfortable sharing it. Loopin free online mastering gave me a version that sounded more complete while keeping the vocal intimate. I liked being able to compare the result and decide what suited the song.
Chloe ParkerSinger songwriterI wanted my vocal to sit comfortably over the beat without the whole song feeling harsh. Loopin free mastering gave me a useful version to compare against my mix. The track felt fuller, and I liked how quickly I could get back to making music.
Brianna HayesRapperMy lo fi beat needed polish, but I wanted to keep its softer character. The Loopin master felt smoother and more consistent without making the track feel overly aggressive. Free beat mastering like this is useful when I am testing ideas before choosing what to release.
Hana ParkLo fi beatmakerMy instrumental had quiet sections and a bigger ending, so I wanted a master that still felt musical. Loopin gave me a useful version that sounded more even overall. Online mastering helped me check the track as a complete piece rather than focusing on individual sounds.
Anika ShahInstrumental composerWe tried Loopin online mastering on a rehearsal recording we had cleaned up and mixed. It gave us a more consistent version to share with friends. For an independent band testing material, free mastering is a helpful way to hear how a song might come together.
Caleb FosterIndie band memberMy guitar instrumental sounded a little uneven before I tried Loopin mastering. The mastered version felt more settled, and the quieter details were easier to follow. It was a useful finishing step for a home recording that I wanted to share without booking a studio session.
Daniel MercerGuitaristLoopin free beat mastering was easy to try, and my track sounded more complete afterward. I would like more guidance on choosing the best result for different styles, but the simple workflow helped. It is a useful starting point while I learn how to improve my mixes.
Elena CruzNew beatmakerI needed a finished version of an original music track for a video project. Loopin online mastering gave me a cleaner, more consistent listening result without adding much time to the edit. For creators making their own music, this is a convenient finishing step to try.
Lauren MitchellVideo producer
Online mastering for engineers and freelancers
If you master for clients, the slow part is rarely the processing. It is the back-and-forth, the previews and the tenth track of the month. Loopin Mastering is a fast first pass for that work, with its limits stated up front: a stereo mixdown in, one track at a time, and your ears making the final call.
Where it fits in a client workflow
Client preview: send a loudness-matched A/B before the paid pass so the client hears the direction early. First pass: get close in minutes, then finish by ear. Reference: compare your own master against a consistent automatic one to catch over-limiting. Volume work: demos, singles and catalogue tracks that need a consistent, streaming-ready result.
Keep a release consistent
Export every mix the same way, choose one feel per project, and check the loudness against your target before you deliver. A quick back-to-back listen across the whole release catches a track that jumps in level or tone. Our guides on stem vs stereo mastering, bouncing a mix for mastering and mixing vs mastering cover the prep.
Free to preview, Unlimited for volume
Mastering, previews and the loudness-matched A/B are free and unlimited. Downloads on the free tier are capped at one per rolling 24 hours with no account, and two with a free account. For daily client work, Loopin Mastering Unlimited removes the cap, so your cost per master falls as your volume rises. Prices differ by country, so the plan picker shows the price in your own currency.
After you subscribe you return to this page, signed in and ready to work. See full plan details, and check the Terms for what applies to your releases.
What it does not do
There are no stems, no album or batch mode and no 24-bit export, and it cannot repair a bad mix or take creative direction. Records that need judgement, a specific format or a conversation with the artist belong with a human mastering engineer.
Mastered it?
Now write the next one.
Loopin keeps your beats, lyrics and takes in one place — so the song actually gets finished.
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Mastering for engineers, answered
Can I use Loopin for client work?
Yes, as a fast first pass, a preview to send before the client pays, or a reference to compare against your own master. Check the Terms for what applies to your releases, and hand a track to a human engineer when it needs judgement.
How many masters can I do?
Mastering and previews are unlimited. Free downloads are capped at one per rolling 24 hours with no account and two with a free account. The Unlimited plan removes the cap.
How much is Unlimited?
It varies by country. The plan picker shows the price in your own currency before you decide.
What are the limits?
You upload a stereo mixdown, one track at a time. There are no stems, no album or batch mode and no 24-bit export.
Does it replace a mastering engineer?
No. It is quick and consistent, which suits previews and first passes. It cannot fix mix problems or take creative direction.
Where do I land after I subscribe?
Back on this page, signed in, so you can carry on straight away.
Try it on a real client track above, or .
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Read MasteringMixing vs Mastering: What’s the Difference?
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Read StreamingHow to Master for Spotify, Apple Music & YouTube
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