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Since 1955, the MEZ-13 synchrophone has been producing the Moscow Experimental Plant. The MEZ-13 synchrophone (tape recorder) is intended for simultaneous recording of sound and images when filming movies of various themes and categories. The recording of phonograms is made on a special magnetic tape 17.5 mm wide with one perforated side. Recordable frequency band 50 ... 10000 Hz. Power consumption 200 watts. The mass of the device is 150 kg.