Free Frequency Balance Checker

Upload your track and see exactly where your frequency balance is off. No signup, no download, no account.

What this tool checks

Your frequency balance is the single biggest factor in whether your mix sounds professional or amateur. If certain frequency ranges are too hot or too quiet compared to a commercial standard, your mix will sound off — even if you can't hear why.

• Sub bass (20-60 Hz): Too much = boomy, loose. Too little = no weight.
• Bass (60-250 Hz): Too much = thick, heavy. Too little = thin, weak.
• Low-mids (250-500 Hz): Too much = muddy, boxy. The #1 mix problem.
• Mids (500 Hz - 2 kHz): Too much = nasal, honky. Too little = hollow.
• High-mids (2-6 kHz): Too much = harsh, fatiguing. Too little = dull, distant.
• Highs (6-20 kHz): Too much = piercing, sibilant. Too little = dark, muffled.

How it works

Upload your track to MixDiagnose and the frequency balance analysis shows you the level of each frequency band compared to where it should be. You'll see exactly which ranges are too hot, too quiet, or just right — with specific dB values and fix recommendations.

Why frequency balance matters more than anything else

You can have great individual tracks. Great recordings. Great arrangements. But if your frequency balance is off — too much low-mid, not enough highs, boomy bass — the mix will sound amateur. No amount of compression, reverb, or stereo widening fixes a frequency balance problem.

The tricky part: your ears adapt. After 20 minutes of mixing, you can't hear the mud anymore. You've gotten used to it. That's why an objective measurement is so valuable — it tells you what your ears can't.

Common frequency balance problems

• Muddy mix: 200-400 Hz is too hot. Cut 2-3 dB at 350 Hz.
• Thin mix: 60-250 Hz is too quiet. Boost 1-2 dB at 100 Hz.
• Harsh mix: 2-6 kHz is too hot. Cut 2-3 dB at 4 kHz.
• Dull mix: 6-20 kHz is too quiet. Boost 2 dB at 10 kHz.
• Boxy mix: 300-500 Hz is too hot. Cut 2-3 dB at 400 Hz.

The MixDiagnose report tells you which of these you have, with exact dB values and specific EQ recommendations.