Source Four LED is the merging of the Source Four and desire product lines. It offers the high quality optics and control of a Source Four with the grace and powerful color control of desire Source Four LED Lustr+ fixtures are based on the x7 color system utilizing six colors plus high-intensity white to achieve true, usable broad-spectrum color. Rich vibrant colors as well as subtle theatrical tints are all possible with this color changing fixture. Explore new opportunities by pairing with incandescent light from the ETC’s original Source Four line of fixtures to provide maximum flexibility and range. Lustr+, daylight, and tungsten light engines work with all Source Four lens tubes to deliver a high quality controllable beam of LED light. For the best results it is highly recommended that EDLT versions are used. We also offer a special LED only version of the 50° lens tube.