The Sennheiser A 2003 UHF Antenna is a useful easy to function way of enhancing your wireless systems. In many areas with obstacles signals can be lost giving a distorted and unfocused sound. Sennheisers antenna increases the range and picks up more data from your microphone for an enhanced sound experience. The A 2003 UHF can be applied to a range of venues such as school assembly halls concert venues churches and anywhere that needs clear sound without excessive wires.