Compatible with various devices: Designed for devices with a 1/4" or 3.5mm (1/8") microphone input. Works with karaoke machines, mixers, vocal machines, audio amplifiers, PA systems, active speakers, voice amplifiers, truck speaker systems, speaker system dome speakers and other streaming media devices. Perfect for indoor, outdoor, karaoke, parties, churches, meetings, weddings, speeches, teachings, opening ceremonies, promotions, DJs, small stages, business events, etc.