The perfect matching PHONE light for all D&R mixers and of course other brands too. We call it a lamp but actually there is no lamp inside anymore, just everlasting high-intensity LEDs. The unit is powered by a 12 volt DC 1 Amp external power supply. No complicated high voltage AC switching with external relays etc. etc. All you is one stereo cable (wired tip/ring) coming from the MIC-ON connector on the back console that goes directly hardwired to a barrier strip inside the RECORDING LIGHT. Too easy! The power adapter (included) is also directly wired to the barrier strip inside the unit.