Check your track's stereo width and mono compatibility — free, no account

Stereo correlation shows how much your two channels agree — a mix that sounds wide in stereo can still fight itself, and lose level, the moment it's summed to mono on a phone, a laptop or a club system. There's no platform specification for this one; RefBooth's target band — 0.3 and above overall, 0.7 and above for bass — is the range a finished mix keeps before that starts happening.

Check a master free

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• Stereo correlation and bass correlation, each against a target band
• Mono-sum loss, so you know what a mono system actually hears
• All 13 measurements in one report
• A verdict, ranked by what to fix first
• Export as PNG, text or JSON