Stereophonic dynamic telephones "Amfiton TDS-17" since the 1st quarter of 1987 have been produced by the Kotovsky branch of the Chisinau plant of calculating machines. Miniature head phones "TDS-17" are designed for individual listening to sound programs from small-sized cassette players, cassette recorders, as well as from any other household radio equipment that has connectors for connecting telephones. The nominal frequency range is 20 ... 20,000 Hz. Rated power - 0.5 mW.
Nominal electrical resistance 100 Ohm. The total harmonic distortion in the frequency range 250 ... 8000 Hz is not more than 1%.
The dimensions of the phones are 200x190x42 mm.
Weight 60 g.