Intelligent Controls: Back lit, LED-ringed, touch-sensitive controls
Illuminated controls provide feedback information about what controls are doing. For example LED rings around encoders tell you the position of your filter cutoff, and back-lit buttons will indicate whether a track is muted or not.
Each pot, encoder and fader is touch sensitive so by simply touching the control you can bring up information about that entire row of faders on the LCD screen without having to move the control and lose your settings.