IP-amplifier PLY 300 is a subscriber equipment for wired loudspeaker communication and is designed to convert digital communication interface signals into analogue signals of audio frequency, to amplify and transmit them over a two-wire communication line to loudspeakers and acoustic systems in sound reinforcement and public address complexes.IP-amplifier PLY 300 can be used as an IP-subscriber device in the system of dispatch, operational-technological loudspeaker communication and notification ARMTELICS (produced by "Armtel", Russia) at the enterprises of industry and transport
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