Why level-matched A/B matters in mastering

You press play on the master and it seems clearer straight away. Before keeping the settings, turn it down to the original’s loudness and compare again. Some of that first impression may simply be the extra volume.

Start by listening at the master’s actual level. Then enable level matching and compare the same passage again. The first pass lets you judge the intended playback level; the second makes it easier to hear what the processing changed.

Why extra volume can mislead

A gain difference can affect how you judge clarity, bass and detail. That makes a direct comparison difficult when the mastering pass also raises the level. Matching loudness removes that difference from the comparison.

In our first supplied raw/master pair, the supplied master measured only 0.112 LU louder than the raw file. PolishMyTrack’s adaptive result was 1.63 LU louder. To compare its low-mid cut, air lift, stereo adjustment and de-essing, we needed to turn that result down by the measured difference.

What to listen for

• Drums: do the kick and snare still have a clear attack?
• Vocals: are sharp “s” sounds reduced without making the voice dull?
• Bass: can you follow the bass line more easily without losing the low notes?
• Stereo image: do centred sounds stay in place, and can you still hear the instruments at the sides?
• Verse and chorus: does the chorus still feel larger than the verse?

Switch at the same playback position: compare the same kick hit, vocal phrase or chorus. Keep the listening volume comfortable and the gaps short enough that you can remember what you just heard.

How the level-match control works

PolishMyTrack measures the loudness difference and turns down whichever version is louder. The control names that version and shows the adjustment. It changes monitoring only; your downloaded master keeps its export level.

Whole-track loudness matching is a useful starting point, but it does not make every moment equally loud. A compressed chorus and an open verse can still change relative to each other. Check both sections.

When you prefer the original

If you prefer the original after level matching, reduce the change that bothers you and compare again. You might want less limiting, a smaller tonal adjustment, or no processing at all. The comparison is useful even when you decide to keep the original.