Audio Mixing Master Track QA Checklist

A real mix QA pass checks levels, frequency balance, and playback translation across multiple systems, not just how it sounds on studio monitors.

Engineers often finalize a mix that sounds great on studio monitors, then discover it falls apart on a phone speaker or in a client's car.

Why This Happens

Studio monitors are built to reveal detail evenly, but most listeners hear music on far less accurate systems, so a mix that only gets checked in the studio misses how it actually translates.

What's Inside

This checklist is interactive, click to check off items in your browser, plus printable if you'd rather keep it at the mixing desk, and it covers level, frequency, and multi-system playback checks in the order that catches real translation problems.

Quick Tips

Check overall loudness against a reference track, not just by ear.

Listen on at least 3 different playback systems before calling it done.

Take a break before the final listen, fresh ears catch more.

Pairs well with: Youtube Pre Upload Video Seo Checklist

Frequently Asked Questions

Why does my mix sound different on different speakers?

Every playback system has its own frequency response, which is why testing on multiple systems is the only way to confirm a mix translates well everywhere.

What should I check for clipping?

Watch the master bus meter for any peaks hitting 0dB or above, since clipping causes audible distortion that's hard to undo after export.

How do I know if there's a phase issue?

Fold the mix down to mono and listen for elements that thin out or disappear, that's a common sign of phase cancellation between stereo elements.

Why compare against a reference track?

A reference track gives you an objective loudness and tonal benchmark, since ears adapt to a mix over long sessions and lose objectivity.