glossary
Mid-side EQ lets you shape the center and sides of a stereo signal separately.
Mid-side EQ splits a stereo signal into information common to both speakers and information that differs between them. The mid channel usually feels centered; the side channel carries width.
That makes it possible to brighten the edges, clean the center, or narrow low frequencies without treating the whole stereo image the same way.
Boosting the side channel can make a mix feel wider, but it can also make important details less stable when summed to mono.
Low-end side boosts are especially risky because they can reduce translation on club systems, phones, and any playback path that collapses bass.
Compare stereo, mono, and M/S meters while making EQ moves. If the mix becomes impressive only in stereo, the move may be too expensive.
Meter Core keeps stereo and level context visible so M/S EQ remains a mix tool instead of a guessing game.