TDS-5 (Elektronika) 1982
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Headphones "Electronics TDS-5" were produced since 1982 by the Saratov plant "Contact." Designed for individual listening to mono and stereophonic soundtracks from home radio equipment. A system of electroacoustic transducers is used, which ensures uniform frequency response over the entire range of effectively reproduced sound frequencies. Frequency range 20 ... 20000 Hz. Rated power input 3 mW, maximum 100 mW. Harmonic factor 1%. The impedance module is 100 Ohms. The mass of phones with cord and connector 340 g.
Documentation:
Information from collection of Valery Khartchenko