MixChecker simulates different speakers so you can hear how your mix translates. MixDiagnose uses AI to identify specific issues — frequency, loudness, dynamics, phase — and tells you exactly how to fix them. Both check your mix, but in completely different ways.
MixDiagnose and MixChecker both exist to answer the question "does my mix translate?" — but they approach it from opposite directions. MixChecker changes what you hear. It simulates phone speakers, laptop speakers, car stereos, earbuds, and club systems so you can listen to your mix through those systems without leaving your studio. MixDiagnose tells you what's wrong. It analyzes your mix and produces a list of specific issues — "your low end is 5 dB too hot," "your stereo image collapses in mono" — with severity grades and fix recommendations. One is a listening tool; the other is a diagnostic tool. They're complementary, and here's how they compare.
| Feature | MixDiagnose | MixChecker |
|---|---|---|
| Speaker / system simulation | ✗ | ✓ Phone, laptop, car, earbuds, club, etc. |
| Listen to how mix translates | ✗ | ✓ Real-time in your DAW |
| AI mix analysis | ✓ Automatic issue identification | ✗ |
| Frequency balance analysis | ✓ Spectrum vs. genre reference with dB offsets | ✗ |
| LUFS / loudness measurement | ✓ Integrated, true peak, streaming targets | ✗ |
| Dynamic range / crest factor | ✓ | ✗ |
| Stereo width analysis | ✓ Per-band + mono compatibility | ✗ |
| Phase / mono compatibility check | ✓ Measured and reported | ~ Mono simulation only (listen test) |
| Frequency masking detection | ✓ | ✗ |
| Specific issue identification | ✓ "Cut 300 Hz by 3 dB on bass" | ✗ You hear the problem, you find the cause |
| Severity grading | ✓ Critical / Moderate / Minor / Ideal | ✗ |
| Fix recommendations | ✓ | ✗ |
| One-click auto-fix | ✓ | ✗ |
| Runs as a DAW plugin | ✗ Web app (upload-based) | ✓ VST, AU, AAX |
| Reference track comparison | ✓ Automatic, genre-matched | ✗ |
| PDF reports | ✓ | ✗ |
| Batch processing | ✓ | ✗ |
| Price | Free for 3 analyses/mo · $19/mo Pro | $49 one-time (MixChecker) · $89 (MixChecker Pro) |
| Best for | Objective mix diagnosis with specific fixes | Listening to how your mix translates on other systems |
MixChecker (by Audified) is a plugin that simulates different listening environments. You put it on your master bus, click a button, and suddenly you're hearing your mix as if it were playing through an iPhone speaker, a laptop, a car stereo, earbuds, a club PA, or a cheap Bluetooth speaker. The Pro version adds more device models, background noise, and a distortion simulation. The idea is simple: you can't physically check your mix on every system your listeners will use, so MixChecker simulates them for you.
This is genuinely useful. Translation — how your mix sounds on different playback systems — is one of the hardest things to get right, and MixChecker makes it faster than bouncing a file and carrying it to your car. If your bass disappears on the phone simulation, you know your low end is too sub-dependent. If your vocal gets lost on the laptop speaker, you know your midrange needs work. It's a practical tool for catching translation problems early.
The limitation is that MixChecker doesn't analyze anything. It changes what you hear — it doesn't tell you what's wrong. You still have to use your ears to identify the problem, figure out which frequency or instrument is causing it, and decide how to fix it. If your vocal sounds harsh on the earbud simulation, MixChecker won't tell you "cut 4 kHz by 2 dB." You have to find that yourself. And it doesn't measure loudness, dynamics, or phase — it's purely a listening tool. It also depends entirely on your monitoring environment and your ears: if your room is untreated, you're hearing a simulation of a phone speaker through a distorted room, which can compound errors.
MixDiagnose takes the opposite approach. Instead of changing what you hear, it analyzes the audio file itself and tells you what's in it. You upload a track and in under 30 seconds you get a report covering frequency balance, LUFS and true peak, dynamic range, stereo width, mono compatibility, phase, and frequency masking. Each finding is graded Critical, Moderate, Minor, or Ideal — and each comes with a plain-English explanation and a specific fix: "Your low end is 6 dB too hot relative to genre reference. Cut 60 Hz by 3 dB on your kick and bass."
It also offers a one-click auto-fix that applies corrective EQ to your uploaded file and gives you a downloadable reference. That means you don't just learn what's wrong — you get a starting point for fixing it. And because the analysis is done on the file itself, not through your monitors, your room and your ears don't affect the result. It's an objective check that works regardless of your monitoring environment.
The trade-off: MixDiagnose doesn't simulate speakers. It can't tell you "your mix sounds thin on a phone" by listening to it — it tells you "your mix lacks energy above 2 kHz, which will make it sound thin on small speakers." That's a prediction based on frequency analysis, not a simulation. And it's not real-time: you upload, wait, and read a report. It's a checkpoint tool, not a continuous monitoring tool.
MixChecker and MixDiagnose are complementary tools that solve the same problem from different angles. MixChecker helps you hear translation problems. MixDiagnose helps you identify and fix the underlying issues that cause them. They're both about "does my mix work on other systems?" — but one gives you ears, the other gives you answers.
If you have a decent monitoring setup and you trust your ears, MixChecker is a fast, practical way to check translation. Click the phone button, listen, and if the vocal disappears, go find it. But you still have to find it — and if you're mixing in an untreated room, the simulation is layered on top of your room's existing problems, which can mislead you. MixDiagnose bypasses all of that by analyzing the file directly.
The best workflow uses both. Run your mix through MixDiagnose first to get the objective diagnosis — fix the Critical and Moderate issues it identifies. Then use MixChecker to verify the fixes translate: "I cut the low mids by 3 dB — does it sound less muddy on the phone simulation now?" MixDiagnose tells you what to fix; MixChecker confirms you fixed it. At $49 one-time for MixChecker and free (or $19/mo) for MixDiagnose, the combined cost is under $70 to start.
If you can only pick one: choose MixChecker if you have good monitors, trust your ears, and just want to hear how your mix translates on other systems. Choose MixDiagnose if you want specific issue identification with fix recommendations — especially if your room isn't fully treated or you want an objective check that doesn't depend on listening.
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