60 selectable UHF frequencies each 120 total. * High gain (6dB) omnidirectional antennas. * Cardioid directional type. * Synchrony by means of infrared. * Independent volume controls. * Wide dynamic range that avoids distortion. * Asymmetrical output with the mixture of the two signals. * Two independent balanced outputs. * Approximate range of 100 m. no obstructions. * Duration batteries 6 to 7 hours.