Headphones Compatible With Monitors Featuring Infrared Audio Transmission * Headphones can be used with IR transmitter included in this set or any monitors equipped with IR audio transmitter * The IR Transmitter requires 12 Volt DC power input to work (you can connect this unit directly to your 12 volt DC car wiring) * In order to use the IR transmitter for home audio you need 12 volt DC 1A/1000mA power adapter (not included in this set)