WM-701S

The WM-701S is a higher-end playback Walkman built around a slim metal chassis and a more mature late-generation feature set, combining auto-reverse, Dolby B and C noise reduction, an EX Amorphous head, Extended Dynamic Bass Boost, and logic control in a tightly packaged body. The rigid metal enclosure helped reinforce the sense of precision and permanence, while the harder-wearing head material and upgraded noise reduction positioned it above Sony's simpler everyday players. It was a compact machine, but not a casual one.

This model shows Sony moving from breakthrough engineering into refinement as a luxury. The 701S was not radical in the way earlier miniaturization milestones had been, but it represented a stage where the company was polishing the cassette Walkman into something denser, cleaner, and more self-assured. It is a product from a line that already knew what it was.