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Since the beginning of 1960, the professional tape recorder "MEZ-28A" has been producing the G. Petrovsky Gorky Plant. Professional stationary 2-speed tape recorder '' MEZ-28A '' is designed to work in recording studios, broadcasting, cinema, and conducting research projects. '' MEZ-28A '' provides: high-quality recording and playback of phonograms, overwriting them to and from another device. The joint operation of two or more tape recorders without transitional devices is allowed. The device allows recording and playback at 2 speeds of tape type 1 - 76.2 and 38.1 cm / s and provides a frequency band of 30 ... 15000 Hz at a speed of 76.2 cm / s and 60 ... 10,000 Hz at a speed of 38.1 cm / sec. The tape recorder is powered from the 220 V network. The power consumption is 300 W. Since 1957, the plant has produced a tape recorder "MEZ-28" similar to that described, but with a narrower operating sound frequency range at a higher speed: 30 ... 12000 Hz.