Quad Lim is the limiter version of Quad Comp, which, according to the limiting principle, has a fixed, infinity-to-1 ratio. Time constants and makeup gain are user definable for increased control. As with Quad Comp you can adjust the slope of the filters that split the frequency bands, so that dynamics control is broader or sharper, depending on your needs.
As for the Quad Comp the quality and transparency of the filters used for the band splitting was particularly important so that no artifacts or ringing are generated at the crossover points.
The Custom Shop: