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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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.

WarmRound low-mids, analog glow.
PunchyTight, hard-hitting lows.
CrispAir up top, tamed esses.
WideBig stereo, bass kept mono.
VintageTape colour and roll-off.
ClubLoud, smiley, club-ready.
Lo-fiSoft, narrow and hazy.
CinematicDeep, wide, dynamics kept.

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.

    Portrait of Maya BennettMaya BennettIndependent artist
  • I 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.

    Portrait of Ethan KimEthan KimYouTube creator
  • The 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.

    Portrait of Owen MillerOwen MillerElectronic producer
  • Loopin 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.

    Portrait of Marcus ReedMarcus ReedIndependent producer
  • I 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.

    Portrait of Mateo RiveraMateo RiveraTrap producer
  • I 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.

    Portrait of Leila HaddadLeila HaddadDance music producer
  • I 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.

    Portrait of Riya KapoorRiya KapoorContent creator
  • I 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.

    Portrait of Adrian ChenAdrian 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.

    Portrait of Jordan EllisJordan EllisBeatmaker
  • I 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.

    Portrait of Arjun MehtaArjun MehtaBedroom producer
  • I 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.

    Portrait of Sofia RamirezSofia RamirezMusic hobbyist
  • I 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.

    Portrait of Lily BrooksLily BrooksPop artist
  • After 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.

    Portrait of Isabel SantosIsabel SantosCover singer
  • I 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.

    Portrait of Nia CarterNia CarterStudent musician
  • The 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.

    Portrait of Andre MorganAndre MorganR and B artist
  • Loopin 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.

    Portrait of Adam RahmanAdam 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.

    Portrait of Chloe ParkerChloe ParkerSinger songwriter
  • I 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.

    Portrait of Brianna HayesBrianna HayesRapper
  • My 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.

    Portrait of Hana ParkHana ParkLo fi beatmaker
  • My 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.

    Portrait of Anika ShahAnika ShahInstrumental composer
  • We 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.

    Portrait of Caleb FosterCaleb FosterIndie band member
  • My 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.

    Portrait of Daniel MercerDaniel MercerGuitarist
  • Loopin 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.

    Portrait of Elena CruzElena CruzNew beatmaker
  • I 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.

    Portrait of Lauren MitchellLauren 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?
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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 .