The 6000W Electronic Ballast with ALF and DMX is Arri's high performance, power factor corrected, electronic ballast. The Active Line Filter provides a higher Power Factor resulting in more efficient power use. This is accomplished by shifting the voltage and current waveforms in phase and minimizing harmonics and spikes. ALF also minimizes the current carried back on the neutral leg of the power systems. This model also has DMX connectivity for remote control.