Wireless Microphone System UHF 8 Channel 8 Lavalier 8 Bodypacks 8 Headsets 3 year free warranty Frequency range ? (520.1? 523.7? 525.1?527.7)& ?550.1? 553.7? 555.1?557.7?MHz Features: 8 Channel 8 bobypack 8 Lapel Mic 8 Headsets Individual Volume Control on each Channel Two 1/4" Mixed and 8 XLR" Individual Outputs Perfect operation status indicater 4 Telescoping Receiver Antennas Broad frequency response range, super low distortion metal design Use 2*1.5V battery Specifications: Overall System Number of Channels:8 channels Carrier frequency range:500MHz-580MHz Stability:±0.006% Normal deviation:±22kHz S/N ratio:<120dB T.H.D:<0.6% Frequency response:50Hz-15kHz Receiver Sensitivity:>80dB Audio output:Balanced and Unbalanced Power requirement:AC 16V,2000mA Dimensions:510×290×70mm Weight(weight):Approx.13bl Wireless Microphone Cartridge:Dynamic Antenna:Built-in RF output:<10mW Normal deviation:±22kHz Maximum deviation:±80kHz Comes With 8 x Lavalier Microphones 8 x Lapel Mics 8 x Headsets 1 x Base Transmitter 1 x US 110-240v Power Adapte