The first of Sony’s iconic portable cassette tape players went on sale on this day, July 1st, back in 1979 for $150. As the story goes, Sony co-founder Masaru Ibuka got the wheels turning months ...

The 1980s could well have been the Walkman decade. The popularity of Sony’s device — and those by brands like Aiwa, Panasonic and Toshiba who followed in Sony’s lead — helped the cassette ...