Walkman: A História Ilustrada (1979–2004) A timeline of Sony’s cassette Walkman models from 1979 to 2004 - EP.10 - 1984: SONY WALKMAN WM-DC2

 

Also released that year, the WM-DC2 added both Dolby B and Dolby C. Custom ICs

 supported the system, while a laser amorphous head improved durability and playback

 accuracy. A dedicated line-out signaled its professional intent.