The LD Systems U508 4 Channel Wireless Conference System is a complete solution for the complex audio requirements of conferences and conventions. The 4 premium quality condenser microphones have a switchable high pass filter and hyper-cardiod polar pattern to offer superb signal isolation from external sound sources and vibrations to the housing. Set up is made easy by the receivers automatic frequency and channel scanning and infrared synchronisation. Once set up the system can be easily configured using the high quality OLED display digital encoder and buttons to access the individual channel controls. Up to five receivers can be daisy chained together for larger events with a maximum of 20 microphones.