WM-EX70

The WM-EX70 is a slim playback Walkman that shared much of its core platform with the EX60, including auto-reverse, Dolby B, Extended Dynamic Bass Boost, and the EX Amorphous head, but distinguished itself through a more flexible full-function remote arrangement. Instead of fixing the earphones directly to the control cable, Sony separated them through a mini-jack connection, making the remote easier to use with different listening setups while keeping the main unit compact and clean. It was a subtle but meaningful usability upgrade.

This is exactly the kind of refinement that starts to define the early 1990s Walkman. Sony was no longer simply miniaturizing the player, but refining the ecosystem around it: remotes, connectors, charging habits, and the compact physical rituals of use. The EX70 is a product from a time when the listening experience was increasingly happening one layer away from the machine itself.