A/B compare
Hear the difference. Not the file name.
Two versions share one timeline. Switch at 01:43 and you’re still at 01:43. Level matching turns the louder version down to the quieter one, so you judge the mix, not the volume.
A · MIX 19 / B · MIX 20
Switch between them, turn level matching off and on, and play the synthesized tones to hear the switch. Press A or B on your keyboard.
B −1.8 dB · matched to -9.4 LUFS
Switching keeps your place: the playhead stays at 01:43, and the change crossfades over 40 ms so you hear only the difference. The tones are synthesized in your browser; no music is streamed.
How it works
- 01Pick two versions of a song.
- 02Both play in sync on one timeline. Switching keeps the playhead exactly where it is.
- 03The switch crossfades over 40 ms, so you hear the difference without a click.
- 04Turn on level matching: the louder version is turned down to the integrated loudness of the quieter one.
- 05Loop a section and switch as many times as you need.
- SAME SECOND
No restart
The comparison happens at the moment you are listening to, not from the top.
- LUFS
Integrated loudness
Each version’s loudness is measured (EBU R128) when it is processed; matching uses those numbers.
- NEVER BOOSTED
No clipping
Matching only ever turns the louder one down, so it can’t push a master over full scale.
- LOOP
The section in question
Set a loop and compare the chorus, not your memory of it.
- ANY TWO
Not just neighbours
Compare Mix 12 with Mix 20, or a mix with the master.
- EVERYWHERE
Desktop and phone
The same comparison works in the browser on a laptop or a phone.
Questions
Why does level matching matter?
Even 1 dB of difference makes the louder version sound fuller and brighter to most listeners. Matching removes that bias. The Liner Notes guide explains why.
Does matching change my files?
No. The gain is applied only during playback. Files are never modified.
One home for every song.
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