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The Sony MDR-7 is a model of headphones manufactured by Sony from 1981 to 1983 in Japan. Priced at approximately 190 DM in 1982, these headphones were part of a broader line including models such as the MDR-1 T, MDR-2, MDR-3, MDR-4 T, and MDR-5 A. The MDR-7 features a robust construction, making it ...