Key Features 1 x M18 HMI Lamp Head 1 x EB MAX High Speed Ballast 1 x Head-to-Ballast Cable 1 x Four-Way Barndoor Set High Output Reflector, 16.8" Diameter 1200 Hz High-Speed Filming Capability DMX Control, 50 to 100% Dimming Active Line Filter (ALF) Compensation of Cable Losses (CCL) 300 Hz: 270-360 Hz, 1000 Hz: 900-1200 Hz