This term quasi-parametric applies to equalizers. A quasi-parametric (also known as semi-parametric) EQ will allow control over the frequency and gain of each band of equalization, but not bandwidth. The mid-range EQs on mixing consoles are often quasi-parametric (sometimes referred to as sweepable mids). While more flexible in some ways than a graphic, a quasi-parametric EQ does not offer the ultimate tweakability of a fully parametric