Designed to double the amount of dimmer circuits using existing wiring, the Dimmer Doubler with Bare Ends from ETC is ideal for users seeking to avoid construction, as well as touring shows that want to economize on connections. The aluminum encased Doubler uses Source Four fixtures with 77V HPL lamps and doubling software available in 120 VAC, 60 Hz Sensor and Unison dimmers, as well as ETC consoles. The Doubler is UL and cUL-approved for use throughout North America.