KAM Quartet Eco Wireless Quad Microphone System. PLEASE BE AWARE THAT ONE MICE IS MISSING. Operates on 863.30 / 864.30 / 863.80 / 864.80MHx frequencies. Display with Channel, RF / AF signal indicators. Individual microphone volume controls. 2 x removable / adjustable antenna. 4 x balanced audio outputs / 4 x mix output sockets. Mains driven – PSU included. 4 x wireless dynamic cardioid microphones. Colour coded end pieces. 2 x 1.5V AA batteries per microphone included. Working distance up to 60m. The Kam Quartet Eco is a 4 channel professional UHF wireless microphone system with 4 dynamic cardiod hand-held microphones and a UHF Multi-channel receiver. The roady-ready metal cased receiver features enhanced muting, high signal to noise ratio and almost zero noise output when on standby. Individual volume controls, RF / AF signal indictors are on the front, and both balance and unbalanced audio outputs on the rear with twin antenna. Four durable colour coded hand held wireless microphones with On/Of switches offer up to 60m of uninterrupted working distance and easily pair with the receiver.