The Maxibright DigiLight 600w 240V Pro Select Variable Ballast features include the super power mode which can give your lamps up to 10% extra power! 

6 variable power modes: 250w, 275w super, 400w, 440w super, 600w, 660w super 

Developed with new Surge Control® software, when multiple DigiLight Pro® Select power packs are started from the same power supply they will safely ignite your lamps one at a time to reduce electrical surges.