These systems will expand and enhance your enjoyment of the various audio sources - such as TV and stereo - found in your home. Like FM radio, the Advent Wireless Systems' 900 MHz signals travel with ease through walls, floors, ceilings and other obstacles, delivering high-quality stereo sound to virtually anywhere in or about the home. Resonator-controlled circuitry for drift - and static-free reception, coupled with outstanding range - up to 300 feet - make the possibilities for your enjoyment of the Advent Wireless Systems nearly unlimited.