The sennheiser ew d asa active antenna splitter allows you to expand your wireless setup for increased versatility. It allows you to use only two antennae to supply a uhf signal to up to four diversity receivers. As well as this dc distribution allows it to supply power to these units in addition to two antenna boosters. Plus if you combine two asa units you can supply a uhf signal to up to eight receivers with still only two antennae. With uhf transmission the ew d asa has greatly enhanced range reliability and scalability. You can also use the smart assist app for distance setup and operation and auto scan allows you to create reliable connections with ease. Select from 2240 frequencies with an equidistant tuning grid that allows for up to 90 channels.