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The transistor "Accord" and "Accord-201" network electrophones from 1969 and from 1973 produced the Popov Radio Plant of Riga together with the VET Radiotekhnika and the Chelyabinsk Radio Plant. The 2nd class Accord (IIEF-69) electrophone consists of an EPU '' II-EPU-40 '' with three speeds of disk rotation 78, 45, 33 rpm, a transistor amplifier and an external speaker in which a broadband loudspeaker is installed 4GD-28. Electrophone is designed for high-quality playback of regular and long-playing records of all formats. The headphone can be used with a radio receiver and tape recorder that has low output power or a narrowband speaker to improve the quality as well as the volume of the sound. The electrophone allows you to listen to the transmissions of the broadcasting network, and in combination with a tape recorder to record from a record to a magnetic tape. The tubular sound pickup has a rotary monophonic piezoceramic head of the GZK-661 type, with two corundum needles for long-playing or ordinary plates. The sensitivity of the pickup is 50..100 mV per cm / sec, the lower limit of the reproduced frequencies is 45 Hz, the upper 14000 Hz. The microphone has a volume and bass tone adjustment. The nominal output power of the microphone is 1.5 W, with a SOI of 3%. The band of operating frequencies in terms of sound pressure is 80 ... 12000 Hz with unevenness at the edges of the 14 dB range. AC power supply. The power consumed from the mains during EPU operation is 25 W, the amplifier 10 W. The dimensions of the speaker are 363x270x122 mm, the electroscope is 392x315x158 mm. The weight of a set is 9 kg. VET '' Radio Engineering '' and the Chelyabinsk Radio Plant since 1973 produced a modernized electric '' Accord-201 '' (type II-EF-1M) featuring a new EPU, loudspeaker in the AU and changes in design.