Using the resonant peak and transistor drive to "tighten" instruments without thinning them out completely.
Removing "mud" or low-end rumble from instruments like vocals (often starting around 60–100Hz) to save power for the kick and bass. Ok RE HighPass Filter 1012 [WiN]
The front panel offers characteristic stepped cut-off frequencies and peak (resonance) control. Using the resonant peak and transistor drive to