The high-quality RLX series rack lights consists of a black single space rack panel equipped with two 3-pin XLR connectors ready to receive one or two detachable Littlites (6, 12 or 18 lengths). The convenient dimmer allows you to adjust the brightness of the lamp to the desired intensity. The flexible gooseneck allows you to direct the light where desired. rack unit with 2 XLR connectors for gooseneck lamps