Nuvo's WA40 equips classrooms and other environments with a simple-to-use amplification option, designed for ample power and crisp audio reproduction. 40 watt amplifier, perfect for delivering audio to any enclosed listening setting. ENERGY STAR qualified. Easy four-button control from both amplifier and portable IR controller. Both hard-wired rear source inputs and front-end source inputs for flexibility in using multiple devices with the system.