Parametric EQ With parametric EQ, not only is each speaker not corrected as well, but the speaker-to-speaker match is usually no different than it was before EQ.

Audyssey MultEQ makes each speaker's response closely match the desired target curve. As a result, each speaker is not only corrected but also matched to every other speaker in the system. This has a dramatic effect on improving the soundstage because matched frequency response is one of the cues that human hearing relies on for imaging. This is what reviewers mean when they say "The soundstage snaps into place."