Our most popular system! The Performance System has everything you need for an easy system to specify, install and operate. Perfect for public venues to meet Americans with Disabilities Act (ADA) guidelines. This installed system includes a Stationary Transmitter and Universal Antenna Kit , Rack Mounting Kit, LR-400 Receivers with Ear Speakers and alkaline batteries. Be sure to specify whether you need 72MHz, 216MHz or 863MHz equipment. You can also substitute any accessories to better meet your needs, such as a rack mount kit, antenna, or a wireless speaker / receiver. Use this system for auditory assistance, audio/video recording feed and press feeds. Great for schools, houses of worship, stadiums, and courtrooms.