Do I need any other equipment to make them work?

If listening to music, simply plug the cable into any iPod, MP3 player or portable media device to enjoy your music. If performing live onstage or rehearsing you will need a wireless transmission system. We are an authorized dealer for Sennheiser and can provide you with their full product line. Please call (800) 589-6531 to speak with a specialist who will help you design your full stage system.