Standalone transmitter delivers sound wirelessly to IAV LightSpeaker IAV Wireless Subwoofer and/or IAV Rock Speaker. The wireless ability saves thousands of dollars by not having to run cables! A source connects ie: iPod Laptop A/V receiver TV to the transmitter and it wirelessly sends sound to your IAV LightSpeakers (sold separately). Up to 16 IAV LightSpeaker's work in a system providing stereo sound in multiple rooms and easily uninstalls if you move. Wirelessly streams audio up to 150' accepts two different sound sources; two separate listening zones in your home. The IAV Subwoofer and AudioRocks can be added.