A mix report PDF is a written and visual breakdown of a song's mix, saved as a file you can keep, print, share and revisit. A good one tells you what is working, what is not, where in the song it happens, and what to try next. The value is in that last part: a report you can act on in your next session beats a list of scores you can only admire.
This guide covers what a mix report normally includes, how to read the visual side (spectrum displays, stereo and loudness readouts), how a mix report differs from a mastering report, and a simple routine for turning every note into a decision.
TL;DR
- A mix report PDF is a portable record of your mix: measurements, visuals, written notes and next steps, all in one file.
- The most useful reports cover balance, frequency content, dynamics, stereo image, depth and loudness, and point to specific fixes rather than vague verdicts.
- Read charts for shape and tilt, not absolute height, and let your ears make the final call.
- Sort notes into must-fix, worth-reviewing and optional, change one thing at a time, and compare before and after at matched loudness.
- A mastering-focused check looks at the finished stereo file, while a mix report looks at the balance inside it.
Table of Contents
- What a mix report PDF actually is
- What a good mix report covers
- Reading the visual side of a mix report
- Mix report versus mastering report
- From report to better mix: a five-step routine
- What makes a report worth keeping
- Our perspective
- Get your own mix report
- FAQ
- Sources
What a mix report PDF actually is
The phrase gets used in two ways in music production, and both are useful.
The first is the session document: a paperwork-style record of a mix. Studios have used these for decades. The AES and NARAS recording documentation sheets, for example, include a mixing sheet with fields for artist, song title, mix date, studio, monitoring, engineer, console, DAW, sample rate, bit depth, reference level and general mixing notes (AES/NARAS session documentation). That kind of record is invaluable when a client asks for a revision six months later and you need to know exactly how the mix was set up.
The second is the analysis report: feedback on how the mix actually sounds and measures. This is what most producers searching for a mix report PDF want. You upload a bounce, and you get back an assessment of the mix with charts, numbers and written guidance, ideally in a form you can download, annotate and keep next to your session.
The two work well together. The session document says what you did. The analysis report says what it achieved. When you keep both, you build a history of your mixes that shows how your decisions change the result.
What a good mix report covers
Not every report is built the same, but the strongest ones cover the same core ground. Here is what to look for, and why each area matters.
| Area | What it tells you | Typical symptom it catches |
|---|---|---|
| Level balance | How loud each element sits against the others | Weak low end from kick and bass levels that do not fit together |
| Frequency balance | Where the mix has too much or too little energy | Boomy lows, harsh upper mids, dull top end |
| Masking | Where instruments fight for the same frequencies | A vocal that vanishes behind guitars or synths |
| Dynamics | How compression and transients are behaving | Flattened drums, lifeless vocals |
| Stereo width and phase | How wide the mix is and whether it collapses in mono | Thin sound on a phone speaker or club system |
| Depth and effects | Whether reverbs and delays create believable space | Washed-out mix, or a dry, flat one |
| Loudness and headroom | Peak and loudness figures, clipping, noise | Distortion, clipped peaks, no room for mastering |
| Translation | How the mix holds up across playback systems | Great in the studio, wrong in the car |
Those rows are not arbitrary. They line up with the problems working engineers keep naming. Sound on Sound's list of the most common mix problem is a lack of balance across the frequency spectrum, with too much or too little below 100 Hz, exaggerated treble or a deficient upper midrange as typical symptoms (10 Essential Mix Checks). Their piece on the five biggest mixing mistakes adds out-of-balance levels, misjudged frequency balance, lack of depth and over-compression that softens transients (5 Biggest Mixing Mistakes).
The same article makes a point worth remembering when you read any report: a mix with no hierarchy, where every instrument sits at the same level, tends to produce frequency overlap and masking in the midrange. Deciding what leads and what accompanies is what makes room for the vocal.
Subjective guidance and objective measurement
A report that is only numbers leaves you guessing what to do. A report that is only opinion leaves you wondering whether it is true. The best format pairs the two: a measurement (say, a build-up of low-mid energy) with a musical interpretation (your guitars are crowding the vocal) and a move to try (a gentle cut in the guitar bus, then check the vocal again).
That is the approach we take at AubioMix. Every report gives both subjective guidance and objective measurement, across 15+ areas of mixing and mastering, with specific steps rather than general advice.
Reading the visual side of a mix report
Charts are quick to take in, which is exactly why they are easy to misread. A few habits keep you honest.
Frequency displays: read the shape, not the height
A spectrum display shows where energy sits across the frequency range. Louder material draws higher on the screen, so a taller curve does not automatically mean a bigger problem. Compare the overall tilt and any sharp, narrow spikes, and if you are comparing against a reference, match the loudness first. If you want a refresher on what a healthy curve looks like, our guide to spectral balance walks through it, and the piece on why a spectrum analyser is useful in mixing covers the practical side.
Three things are worth checking on any frequency view:
- A sharp, narrow spike. Often a resonance, a ringing room mode or an uncontrolled synth note.
- Low-end build-up below 100 Hz. Kick and bass sharing the same space is the classic cause.
- Less high-end energy than a comparable reference. Sometimes that is a choice, sometimes it is a dull mix.
For a deeper walk-through of the whole range, see our frequency balance analysis steps for taming mud and harshness.
Whole mix or single track?
Check what the display is measuring. A reading from one channel describes that source only. A reading from the master describes the whole mix. Uploading a stereo bounce gives you the second view, which is the one that matches what your listeners will hear.
Stereo and phase readouts
Width and correlation displays are there to answer a plain question: does this mix survive being summed to mono? Phone speakers, smart speakers and some club systems collapse the stereo image. If a report flags phase problems, treat it as a prompt to check the mix in mono, and then look at stereo wideners, doubled parts and layered samples first.
Ears first, meters second
Meters are verification, not authority. A graph cannot tell you what sounds good, only what is there. That is why the sensible workflow is to listen, notice something, check it on the report, and then decide. When your ears are tired or your room is imperfect, visual checks earn their keep, because they give you a second opinion you can see.
Mix report versus mastering report
They overlap, but they answer different questions.
A mix report looks at the balance of the elements inside the song: vocals against drums, bass against kick, reverb against dry sound, plus the stereo image and dynamics of those elements. The fixes happen in your session, on individual tracks and buses.
A mastering-focused report treats the stereo file as one object: overall loudness, tonal balance, consistency and headroom for distribution. Mastering changes tend to be subtle. iZotope's explainer notes that most mastering EQ moves are around 1 dB up or down (mixing vs mastering). If a report suggests you need big moves on the master, the problem usually lives back in the mix.
That is why the middle ground matters: mastering prep. Peak headroom, clipping, noise and a sensible tonal balance are things you can fix before the file leaves your hands. Our guides on mixing versus mastering and preparing a mix for mastering in 2026 cover that handover in detail.
From report to better mix: a five-step routine
A report only pays off if it changes what you do. Here is a routine that works.
- Triage the notes. Sort them into three piles: must fix, should review, optional. Must-fix items are technical (clipping, phase cancellation, a harsh resonance). Should-review items are balance calls. Optional items are taste.
- Confirm by ear. A note captures one impression, and it does not prove a change is needed. Listen again after a break, and check the issue on a second system such as headphones, car or phone speaker.
- Make the smallest useful move. A 1 to 2 dB cut beats a drastic one. Fix one thing at a time so you know what caused what.
- Compare at matched loudness. Louder always sounds better, so level-match your before and after, or you will approve changes that only added volume.
- Log it. Write the version number, the date and what you changed. Our mix notes template gives you a ready structure for session notes and a self-review checklist.
Good mix notes are specific. Name a section, say what you hear and say which way to go: "Chorus 1, left guitar, down" is far more usable than a paragraph of description. The same discipline applies whether you are reading a report or writing your own.
A worked example
Say your report flags three things on a pop-leaning track: low-mid build-up around the 250 Hz region, a vocal that gets masked in the chorus, and peaks too close to full scale.
- Peaks near full scale: must fix. Turn the master down or tame the loudest buses so there is clear headroom before anything is mastered.
- Masked vocal in the chorus: should review. Solo nothing; instead, dip the competing guitars or synths where the vocal lives, and automate the chorus level of the backing parts slightly.
- Low-mid build-up: should review. Find which tracks pile up there and thin the least important ones first, rather than carving the whole mix.
Three changes, each tested, each compared at matched loudness. Re-run the bounce and see whether the report moves in the direction you wanted.
Sidebar: clarity applies beyond music
The same listening habits (checking clarity, level and naturalness) matter when your project includes spoken content such as a podcast intro or video narration. If that is part of your workflow, this piece on AI voiceover quality shows how to keep narration sounding natural.
What makes a report worth keeping
When you compare options for getting mix feedback, whether from a collaborator, a plugin suite or an online service, a few questions separate useful from decorative:
- Does it tell you what to do, not just what is wrong? Actionable steps beat scores.
- Does it separate measurement from musical judgement? You should be able to see which is which.
- Does it reflect your genre? A techno kick and a singer-songwriter vocal follow different norms. Genre reference points, like those on our techno and deep house benchmark pages, give you something concrete to compare against.
- Can you keep it? A downloadable PDF lets you track progress from one version of a song to the next, and from one song to the next.
- Is the framework clear? You should know what is being assessed and why. Ours is published on the evaluation framework page.
If you want to see how a finished, commercially successful record reads under analysis, our breakdowns of Beautiful Things by Benson Boone and Mirror by Sigrid show what the feedback looks like on real releases.
Our perspective
We built AubioMix because the hardest part of mixing is not knowing which move to make next. Plugins show you data and tutorials show you techniques, but neither tells you what your mix needs right now.
Our approach combines audio analysis with the practical experience of our founder, a multi-award winning mix engineer with 20+ years in the studio. The analysis finds the measurable things: masking, phase, clipping, loudness, stereo width. The experience turns them into advice a producer can use, with the musical context that a graph cannot give you.
That is why every report gives both subjective guidance and objective measurement, and why our evaluation framework is regularly updated to reflect current genre standards. We want you to leave a report knowing three or four things to try, in a sensible order, and to hear the difference when you do.
Used well, a report is a coach in your pocket: it speeds up your decisions, shortens the revision loop and shows you your progress over time.
AubioMix
Get your own mix report
If you would rather see this on your own track than in theory, upload a bounce to AubioMix and get a detailed report with visual and written feedback, specific actionable steps, progress tracking and a downloadable PDF.
A single Mix Review costs £4.99, and a Reference Pass costs £2.99. If you mix regularly, the Professional plan is £19.99 per month and Professional + is £34.99 per month, both including a fixed number of mix reviews. You can compare them on the pricing page, or start from the AubioMix home page. For a walk-through of getting the most from a first upload, read our upload workflow guide and our explainer on how to read a mix report.
FAQ
What is a mix report PDF used for?
It gives you a saved, shareable record of how a mix measures and sounds, along with notes on what to change. Producers use it to plan revisions, track progress between versions, brief a collaborator or compare a mix with a reference. Keeping each version's report lets you see which decisions helped.
What should a visual mix report show?
At minimum: a frequency view, loudness and headroom figures, stereo width and phase information, and a view of dynamics. Better reports also show where in the song a problem occurs, so you can jump straight to the right section instead of searching the whole timeline.
Can I trust the charts in a mix report?
Trust them as a second opinion, not as the final word. Read the shape of a curve rather than its height, make sure you know whether you are looking at one track or the whole mix, and confirm any big change by ear on more than one playback system before committing to it.
How do I know if my mix is ready to be mastered?
Check that nothing clips, that there is clear headroom, that the mix holds up in mono and that the tonal balance feels settled. Mastering changes are usually small, so the heavy lifting should already be done. Our signs your mix needs work checklist is a useful last pass.
How is a report different from checking my mix with a spectrum analyser?
An analyser shows you a live picture of one thing. A report combines many measurements, interprets them in musical terms and gives you a prioritised list of steps. Think of the analyser as a single gauge and the report as the full dashboard. Our guide on how to analyse a mix shows how they fit together.
Sources
- AES/NARAS session documentation sheets
- 10 Essential Mix Checks, Sound on Sound
- 5 Biggest Mixing Mistakes And How To Avoid Them, Sound on Sound
- What is the difference between mixing and mastering?, iZotope
- AI Voiceover Quality: How to Make Narration Sound Natural