WM-2091

The WM-2091 is a compact playback Walkman distinguished by one of the more angular and visually assertive bodies in Sony's 1991 cassette lineup, using a diamond-like chassis with metal frame and case elements to sit apart from the softer rounded shapes appearing elsewhere. It combined auto-reverse playback, Dolby B noise reduction, anti-rolling stabilization, an EX head, and a three-stage Mega Bass system with Norm, Mid, and Max settings, all powered by a single AA battery. A cassette window and manual tape selector kept the machine grounded in familiar playback behavior despite the sharper styling.

2091 captures how Sony was beginning to treat cassette Walkman more overtly as style objects without giving up the familiar "good everyday player" formula underneath. It was not a radical engineering branch, but a product where shape, feel, and bass personality were clearly part of the appeal. It was an early-1990s attempt to make the tape-only Walkman look more contemporary without changing what it fundamentally was.