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The transistor "Aria EF-5303-stereo" network transistor microphone has been produced by the Riga Electromechanical Plant since 1990. Electrophone of the 3rd group of complexity "Aria EF-5303-stereo" is designed for playing mono and stereo records of all formats at disc rotation speeds of 33 and 45 rpm for 2 S-30A remote speakers. The nominal output power of the microphone is 2x6 W, the maximum 2x10 W. The range of sound frequencies reproduced through the speakers over a sound pressure of 80 ... 16000 Hz. Electrophone is powered from the electrical network. Power consumption not more than 50 watts. The mass of the microphone and speakers in a package is 22 kg. Electrophone dimensions 431x337x165 mm. Dimensions of one speaker 365x215x196 mm.