Individual 1/4 unbalanced outputs; XLR balanced & 1/4 unbalanced mixed output; Professional VHF wireless system with quartz lock for drift-free operation; Power on/standby/off switch; Power LED indicates status; Audio-mute circuitry for quiet operation; Advanced commanding circuitry; AF signal LED segment meter on each channel; Individual volume controls with LED display; 110V-220V selectable; Includes 4 microphones, batteries, 1/4 audio cables & rack hardware; Freq range: 210MHz-280MHz; Up to 240ft operation range ; Includes rack mounts;