AKG DMS Tetrad Performer Set, digital Wireless-System, 2,4 GHz technic, uncompressed transmission 70 - 20.000 Hz, 128 bit signal encoding, set contains 1x DSR 70 19" 1 U 4 chanel receiver, 1 DPT pocket transmitter, 1x condenser Earset microphone COBT, 1x AKG MKG L cable jack/Mini-XLR 1m, digital controlled diversity-antennna system, 4x XLR out, 1x XLR main out, displays Audioclipping, HF signal and batterypower per channel, a maximum of four channels can be operated simultaneously, incl. 19" rackmount, 2,4 GHz is free for use all over the world, Optional accessories: AKG C555 L, AKG CK77 WR / C577 WR, AKG CK97 L, AKG DHT Tetrad D5, AKG DHT Tetrad P5, AKG DPT Tetrad, AKG HC577