The Phonic W5 is a stereo audio system kit, which includes a single transmitter unit and 2 stereo receiver modules, able to be connected to any audio input or output. This wireless unit is a state-of-the-art transmitter and receiver kit, able to transfer audio digitally, allowing for encrypted security and with absolutely zero risk of interference, making it ideal for sound contractors and live sound venues where reliability is important. The Phonic W5 embodies the concept of wireless audio transmission from any mixer to any speaker to effectively eliminate the need of running cables over long distances and worrying about them picking up any noise along the way. They have thrown out the traditional UHF band in favor of a more modern take, which is digital transmission.noisy long cable runs