Repli-Q: Professional EQ and spectral matching/balancing plug-in

Repli-Q analyzes and matches the frequency content in different audio tracks, so their tonal qualities can be made to sound more alike.

An album may contain tracks that were recorded in different studios, and by different engineers — and they may not work together as a group.

Repli-Q's advanced linear-phase spectral matching takes the best spectral qualities of each track, and applies them to the others — making all the tracks sound like they're from the same studio.