Isolator is like some of my Biquad Filter plugins, except it's tuned to a particular purpose. In DJing, one technique is to use a filter on the full mix for effect, and Isolator is geared towards two specific tricks in that vein: sweeping the filter down until the music is just a throb and then bringing it back, or sweeping the filter up to leave only highs and then dropping the bass back in.
http://www.airwindows.com/isolator/
https://www.patreon.com/airwindows/
