The TOA IR-820SPY4QD00 is a 20W infrared speaker designed to deliver uniform sound coverage throughout classrooms with its wide-dispersion speaker. The system features minimal components, including a tuner, two microphones, and an integrated speaker, ensuring simplicity and efficiency. Installation is quick and straightforward, requiring only a single CAT5 cable. Users can choose from three lightweight, low-fatigue infrared wireless microphones to suit their needs. Additionally, the system can be expanded with an optional interface unit for greater flexibility. Enhance your audio setup with this reliable and easy-to-use speaker system, buy now to experience superior sound quality.