The KD1 Kinetic Drive APB plug-in provides direct control over many analog saturation attributes of the APB hardware, for a variety of sounds from subtle harmonic overtones to complete sonic mayhem. KD1 saturation can be focused on a selectable portion of the frequency spectrum, and saturation kinetics (voltage supply reaction, level compression, and more) are also adjustable. Each KD1 drive type uses a different saturation circuit within the APB hardware for even more tone flexibility. Original and processed signal levels can be independently adjusted. Like all APB plug-ins, the controls on the KD1 may be automated, and saved as a preset for instant session recall.