TDS-101 (Ekho) 1980
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Stereophonic head phones "TDS-101" (Echo) have been produced since 1980 in Kiev. Phones are designed for high-quality listening to phonograms. The phones used dynamic heads such as 0.5GD-36. Nominal impedance 24 ohms. The supplied voltage is 1 ... 3 V. The frequency range is 20 ... 20,000 Hz. The distortion coefficient at a frequency of 1000 Hz is about 1%. The volume control range is at least 20 dB. The cord length is 2.9 m. The weight of the phones is 550 g. ,null,ru,null,null,null,null
Documentation:
Information from collection of Valery Khartchenko