In-Ear Monitor Wireless System features digital wireless technology that delivers incredible audio quality, simple setup with plug-and-play operation, and it is also extremely reliable for all gigging musicians. It provides a full 20 Hz - 20 kHz frequency range with 110 dB signal to noise ratio to provide a clear, detailed audio signal at any volume level. This wireless system operates at 5.8 GHz ISM band for crystal clear broadcasting, ensuring the integrity of your signal on stage and it covers more than 30 m (100 ft.) of range without any signal dropout. The U45 Wireless In-Ear Monitor System aims to take the complexity and frustration out of traditional wireless monitor systems. Of course you can combine multiple receivers with one transmitter by choosing one of six available channels.