Walkman: A História Ilustrada (1979–2004) A timeline of Sony’s cassette Walkman models from 1979 to 2004 - EP.20 - 1989: SONY WALKMAN WM-DD9

 

Released in 1989, a decade after the first Walkman, the WM-DD9 became known as the “King

 of Walkmans.” Its precise sound and solid construction placed it at the top of Sony’s cassette

 line.