The hardest part of mixing is knowing when to stop. You've been listening for 3 hours, everything sounds "fine," but you can't tell if it's actually good or if your ears have adapted. Here are 6 objective checks that tell you exactly when your mix is done — no guessing required.
Your mix has healthy dynamics. The mastering engineer has room to shape the loudness.
Your transients are squashed. Mastering can make it louder but can't put punch back. Pull the whole mix down 4-6 dB.
Safe for all streaming platforms. No inter-sample clipping.
Will clip on Spotify, Apple Music, and YouTube. Check true peak, not just sample peak.
Your headroom is available for the frequencies that matter.
Inaudible rumble eating your headroom. High-pass at 28-30 Hz on everything except kick and bass.
The mix sounds clear. Vocals cut through. Bass is defined.
Mud. The #1 note from mastering engineers. Solo each element and cut -2 dB on the less important ones.
Your mix will translate on phones, Bluetooth speakers, and club systems.
Phase issues from stereo widening. Fix in the mix — mastering can't solve phase problems.
Healthy dynamics. The mix has punch. Transients are intact.
Squashed. No dynamics left for mastering to enhance. The mix will sound flat and fatiguing.
Run your bounce through mixdiagnose.com — free, no signup. Drop a WAV in and get a report card showing all 6 checks with pass/fail flags, plus frequency balance across 6 bands, LUFS (integrated, short-term, momentary), dynamic range, true peak, and stereo width analysis.
If any check fails, the mix isn't done. Fix the issue, re-bounce, and check again. 30 seconds of objective analysis beats hours of guessing with tired ears.
After 30 minutes of mixing, your brain adapts. You literally cannot hear mud buildup, compressed dynamics, or phase issues anymore. This isn't a skill issue — it's how human hearing works. Every professional mixer knows this.
The solution isn't "train your ears better." The solution is to use objective tools that don't get tired. A loudness meter doesn't adapt. A spectrum analyzer doesn't get used to the mud. A crest factor measurement doesn't lie.
I've been mixing for 15+ years. I still run every bounce through an analyzer before calling it done. Not because I can't hear — because I know my ears lie to me after extended listening. The objective check is the final word.