The eight middle footswitches can be used to activate or bypass blocks (amps, impulse responses, clones, cabs,or effects) as well as select rigs, setlists, and songs. The footswitches can be used in one of five modes: Stomp Mode, Rig Mode, Hybrid Mode, Setlist Mode, or Song Mode. The mode you are in when you power off HeadRush Prime will be the mode you are in when you power it back on.