A mix review credit is a prepaid unit you spend to get one mix analysed: you upload a bounce, and you get back a written and visual report on what is working and what to fix. At AubioMix, one Mix Review costs £4.99, and the real value is in what you do with the report afterwards. This guide covers what a credit gets you, how to prepare a mix so you do not waste one, how to turn feedback into edits, and how to benchmark your mix against references.
TL;DR
- A mix review credit pays for one analysis of one uploaded mix. At AubioMix a single Mix Review is £4.99, and a Reference Pass is £2.99.
- Subscriptions (Professional at £19.99 per month, Professional + at £34.99 per month) suit anyone mixing regularly and wanting to track progress.
- Spend a credit on a mix that is finished enough to judge: level-matched, clearly named and free of obvious unfinished work.
- Turn each report into a short list of testable edits, then re-upload to check that the numbers moved.
- Benchmark against references after matching levels, and compare range by range, not by one overall impression.
Table of Contents
- What a mix review credit actually is
- Is a credit worth spending? A quick test
- Preparing a mix so the review is useful
- Why an outside review beats listening alone
- Turning a report into edits
- Benchmarking your mix against references
- Checking translation before you spend a second credit
- Our perspective
- Getting started with your first review
- What is a mix revision, and where does a review fit?
- FAQ
- Sources
What a mix review credit actually is
In the music world, the word "credit" usually means something else. The Recording Academy, for instance, defines a Mixer or Mix Engineer as the person who makes the creative decisions and creates the mix-down. That is a credit on a release. A mix review credit is a different thing: it is a unit of feedback you buy.
Here is how it works with us. You upload an audio file of your song, and the app analyses it across 15+ areas of mixing and mastering: compression, EQ, frequency masking, effects, stereo width, phase, loudness, noise and clipping, mastering prep, device translation and more. You get a visual report and a written report with specific, actionable steps, and you can download it as a PDF. One credit, one mix, one report.
I like to think of it as a second pair of ears that never gets tired. When you have been looping the same chorus for six hours, your ears have already adapted to every flaw in it. A fresh analysis resets that.
Credits, references and subscriptions
There are three ways to pay, and they suit different working habits:
- Pay as you go. One Mix Review is £4.99 one-off. Good when you only mix now and then, or want to test the service on a single track.
- Reference Pass. At £2.99 one-off, this is an add-on for comparing your mix against a reference. More on this below.
- Monthly plans. Professional is £19.99 per month and Professional + is £34.99 per month, each including a fixed number of mix reviews. If you deliver several mixes a month, a plan is usually the tidier way to work, and it keeps your progress tracking and leaderboard comparison in one place.
The pricing page always shows the current packs, what each plan includes and the annual options, so check it before you buy.
Is a credit worth spending? A quick test
A review costs little compared with what a bad release costs you in lost momentum, but you still want to spend each one well. I ask three questions before I upload anything:
- Is the arrangement locked? Analysis can tell you the bass is masking the kick. It cannot tell you the song needs a bridge. Reference tracks have the same limit: they are good for calibration, but they cannot fix fundamental arrangement or performance flaws.
- Have I done the basics myself? Gain staging, obvious clicks, a rough balance. A credit is best spent on the subtle stuff you cannot hear any more.
- Do I know what I want the track to be? Feedback is far more useful when you can compare it with your intent.
If you answered yes to all three, upload it. If not, spend an hour fixing the obvious first. Our guide on signs your mix needs work is a decent checklist for that stage.
Preparing a mix so the review is useful
Good preparation turns a £4.99 review into a proper diagnostic. A few habits make a big difference.
Name the version and define the stage
Give the file a clear name with a version number and date, and be clear about the stage of the work, for example a first full mix or a final check. That advice comes from a guide on giving useful mix feedback, and it applies just as well when you are the one receiving the report. Six weeks from now, "Mix_final_FINAL2" will mean nothing. "Song_v4_2026-10-28" will.
Bounce without a master limiter you do not want judged
Decide what you are asking about. If you want feedback on the mix itself, leave heavy master-bus limiting off or keep it light, so the report reflects your balance and dynamics and not just the limiter. If you are checking mastering readiness, bounce as you would for mastering and check headroom and loudness.
Listen first, then upload
Take notes on your own impressions before you read the report. Which part worries you? Where does the vocal feel buried? Then you can compare your hunches with the data. Our walkthrough on how to review your mix objectively covers breaks, level-matching and listening order in detail.
Why an outside review beats listening alone
Research backs the instinct that you need other ears. De Man and Reiss, writing in the Journal on the Art of Record Production, argue that peer review matters because trained listeners expose mix qualities that are hard for the creator to judge alone. They also caution that listening in isolation, without comparison or feedback, cannot establish how an audience perceives a mix.
Their examples of what experienced listeners pick up will sound familiar: too much reverb on the lead vocal, not enough low-frequency content, a bass line that is poorly controlled. Those are exactly the areas where a structured report earns its keep, because it points to the problem and does not just give you a feeling.
Human communities have their place too. If you want a mix of human opinions alongside the data, see our piece on mix critique communities that improve your ears. And if you are collecting opinions from friends or clients, how to get feedback on your mix that actually helps will save you from vague notes.
Turning a report into edits
A report is only as good as the next session. Here is the workflow I recommend.
Step 1: Sort findings into trends
Do not chase every line. Look for themes: if the report mentions low-mid build-up, a masked vocal and a narrow chorus, those may share a root cause. One producer's published workflow suggests consolidating feedback and looking for trends rather than isolated suggestions, then combining them with your own creative intent. That is sound practice whatever the source of the notes.
Step 2: Describe the problem, not the fix
Good feedback is specific, timestamped and describes the audible issue, not the suggested fix, so the mixer keeps flexibility. Apply the same idea to your own notes. "Vocal gets lost in the second chorus at 2:14" leaves room for several solutions: automation, a dynamic EQ cut on the guitars, a parallel compressor. "Turn the vocal up 2 dB" does not.
Step 3: Translate vague into measurable
The note "the chorus needs more power" could mean many things. One mix-notes guide suggests breaking it down into vocal level, transient impact, bass weight, stereo width or arrangement density. Work through each in turn and change one thing at a time.
Step 4: Write testable actions
Turn the report into a short to-do list. Here is an example of how I would write one:
| Report finding | Edit to try | How to confirm |
|---|---|---|
| Build-up around the low mids | Narrow cut on the bass and guitar bus, listen in context | Re-upload and check that the band has eased |
| Vocal masked by synth pad in the chorus | Dynamic EQ on the pad keyed from the vocal | Solo-less A/B at the same loudness |
| Narrow chorus | Widen doubles and backing vocals, keep bass and kick centred | Mono check, then headphones |
| Weak translation on small speakers | Add harmonic content to the bass | Check on phone and earbuds |
The last column matters. If you cannot say how you will know the edit worked, it is not an action yet.
Step 5: Re-upload and compare
This is where a credit pays off twice. Make your changes, bounce a new version, and run it again. With progress tracking you can see whether the areas you worked on actually improved, and whether you broke something else along the way. Fixing a weak low end, for instance, can push a mix into clipping, so it is worth reading how to fix weak low end in one session before you start pushing.
Benchmarking your mix against references
A review tells you what is going on inside your mix. Benchmarking tells you where it sits among finished records. Both are useful, and they answer different questions.
What to compare
A reference is best for calibration: tonal balance, vocal placement, low-end control and information density. The method is simple, and the order matters:
- Match the level first. Volume differences turn into apparent timbre differences, which leads to false conclusions. A louder reference nearly always sounds better, which is not the same as being better.
- Then compare dynamics, EQ, stereo placement, imaging and transients. The Waves five-step method suggests going frequency range by frequency range, starting with the bass and working up through the mids to the high-frequency air, rather than relying on automated graph matching.
- Write down the gaps. "Reference has more top end above 10 kHz, tighter low end, narrower kick" is something you can act on.
We have written about this at length in the benefits of reference tracks in mixing and why to reference mixes before delivery.
Using genre benchmarks
If you do not have the right reference to hand, genre data can fill the gap. Our measured benchmarks cover loudness and tonal balance for techno, deep house and acoustic releases, and you can browse all of them on the benchmarks hub. You can also see how a mix analysis reads on a released record, such as our breakdown of Mirror by Sigrid.
Treat the numbers as a map, not a rulebook. A sparse acoustic song and a club record will never share the same density, and they should not.
Checking translation before you spend a second credit
A lot of reports flag translation: how the mix holds up on different playback systems. You can check much of this yourself before re-uploading. Sound on Sound's ten essential mix checks include making sure the bass and kick are audible on small speakers, sit at the right musical level on each system, and carry sensible content below 100 Hz. Check vocal level and intelligibility too, and use mono and headphone checks.
Music Connection recommends going through the main studio system, a home stereo, mobile-device speakers or earbuds, and a car. Their notes on what to listen for are useful: spatial image at home, tinny or missing bass on a phone, and boomy or crispy balance in the car. MusicRadar adds that a mix with strong bass may work on a club system but sound thin on laptop speakers if it lacks midrange energy, while headphones are good at exposing stereo image problems.
If frequency balance is your recurring problem, the 10-step frequency balance analysis is a good companion for fixing mud and harshness.
Our perspective
We built AubioMix because most automated analysis tools give you a graph and leave you to guess what it means. Our approach combines audio intelligence analysis with the experience of our founder, a multi-award winning mix engineer with 20+ years in the studio. The result is a report that gives both objective measurements and subjective guidance, with steps you can try the same day.
We also keep our evaluation framework updated to reflect current genre standards, because what counts as a well-balanced mix changes. Low-end weight, brightness and loudness norms have all shifted over the years.
My honest advice on credits: do not hoard them and do not burn them. Use one when you have a version you believe in, act on the report, then use another to check your work. Two focused reviews on one track will teach you more than five scattershot uploads of half-finished ideas.
— AubioMix
Getting started with your first review
If you are new to us, a single Mix Review at £4.99 is the easiest way in. Upload a mix you are close to finishing, read the report with your session open, and make the changes one by one. If you want to compare against a favourite record as well, add a Reference Pass at £2.99. If you mix every week, the Professional plan at £19.99 per month or Professional + at £34.99 per month keeps your reviews, history and leaderboard position together.
You can see every option and the current inclusions on the pricing page, or upload your first mix straight away.
What is a mix revision, and where does a review fit?
A review is the diagnosis, and a revision is the treatment. A revision is a new version of the mix after changes, and each one should have a stated purpose. Our guide to what a mix revision is explains how to keep versions organised so the cycle of review, edit and re-check stays tidy.
A useful principle comes from the team at tadaoto: separate what you hear (the current state) from what you want (the goal). That lets the mix engineer, which may be you, pick the most musical technique instead of following a recipe. Write both down before each revision, and your edits will stay focused.
FAQ
How much does one mix review credit cost?
One Mix Review at AubioMix costs £4.99 as a one-off payment. A Reference Pass, for comparing against a reference, is £2.99 one-off. Check the pricing page for current packs and what each includes.
Are credits or a subscription better?
Credits suit occasional mixing: you pay only when you have something to review. A subscription suits regular work, since Professional (£19.99 per month) and Professional + (£34.99 per month) include a fixed number of reviews and keep your progress tracking in one place.
What should I upload for the best result?
Upload a clearly named version at a defined stage, such as a first full mix or a final check, with levels set as you would deliver them. If you are not ready for mastering, say so in your own notes, so you read the loudness and mastering-prep findings in the right context.
Can a review replace a reference track?
No, they do different jobs. A review diagnoses problems inside your mix, while a reference calibrates your ears against a finished record. Used together, and with levels matched, they give you a much clearer picture than either alone.
Will the feedback fix a weak arrangement?
Not on its own. Analysis can point to masking, balance and dynamics, but it cannot rewrite the song. If the report keeps flagging the same crowded section, the answer may be to remove or re-voice a part rather than to process it harder.
Sources
- The Recording Academy: Engineer definitions
- Journal on the Art of Record Production: Analysis of peer reviews in music production
- How to Give Useful Mix Feedback and Approve a Version
- The Making of VX1: Mixing and Mastering
- How Mix Notes Help You Finish Songs Faster
- How to Organize and Communicate Mix Revision Feedback
- The Science of Mix Referencing: The 5-Step Method
- What References Are Good For (Sound on Sound)
- 10 Essential Mix Checks (Sound on Sound)
- Expert Advice: Minimum number of systems to check your mix (Music Connection)
- How to make your mixes translate across different systems (MusicRadar)