Versatile, theater-quality LED lighting. It's a Source Four® and an LED. ETC created Source Four LED™ luminaires to produce the most beautiful light possible from an LED source. You get the crisp optics, user-friendly functionality and convenient size and shape that you love about the Source Four family of fixtures, along with the capable user-interface and high efficiency that made you fall for ETC's Selador Desire™ line of LED luminaires. The Source Four LED Lustr®+ luminaire maximizes the superior mixing capabilities of the x7 Color System™ to offer the most flexible range of color. The super-efficient Source Four LED Tungsten™ luminaire creates stunning warm-spectrum white light with a 3000K color temperature. Source Four LED Daylight™ luminaires feature 60 cool-white LED emitters with a 5600K color temperature that emulates natural daylight. Studio HD's flicker-free mode prevents the undesirable side effects that commonly arise when using LEDs with high-speed and rolling-shutter cameras.