The 4Bank Ballast from Kino Flo is designed to power the 4' or 2' versions of the 4-lamp 4Bank fluorescent fixture. The silent, flicker-free ballast, specifically developed for film and video production, has 4-lamp on/off switching, runs on 100-240 VAC current and can power the fixture up to 75' away using optional head-to-ballast extension cables. It has a special Select switch to raise or drop wattage for output and color control.