Head stereophonic telephones '' Electronics TDS-20 ''.
Headphones, headphones, headsets ...Head stereophonic telephones "Electronics TDS-20" since 1989 have been produced by NPO Almaz, Saratov. The phones are designed for individual high quality listening to mono and stereo phonograms. The range of reproducible sound frequencies is 20 ... 20,000 Hz. Input impedance 40 ohms. Rated input power 3 mW. Passport power 100 mW. The weight of the stereophonic phones is 15 grams. Retail price 20 rubles.
