1993

WM-EX999

Bi-Azimuth Dual Head

The WM-EX999 was Sony's flagship playback Walkman for 1993 and one of the clearest late expressions of how far the company was willing to refine cassette mechanics. It used a dual-head playback system with bi-azimuth adjustment, allowing each tape direction to maintain more accurate alignment without depending on a single rotating head assembly. Sony also included auto-reverse, Dolby B, Extended Dynamic Bass Boost, automatic music sensor, blank skip, AVLS, and advanced LCD remote compatibility, all in a compact metal-framed body that still looked like a normal Walkman rather than a specialist device.

This is one of those models where the engineering became quiet but very serious. The EX999 was not trying to announce a new era so much as remove the last known compromises for people who still cared about cassette playback quality. It feels like the peak of a mature format, where Sony was no longer inventing the Walkman but polishing it almost to the edge.

The WM-EX999 was built around a rigid metal shell and a reinforced frame that placed it in the more specialized corner of Sony's cassette lineup. It was shaped for durability and long stretches of playback, and the mechanism was tuned to stay consistent without softening the sound.

It sat at the top of the playback-only range alongside the FM-capable FX999. A single gumstick cell delivered a longer runtime than earlier EX models, which made the player dependable during extended commutes or travel.

Its most distinctive element was the Dual Head Mechanism. Instead of forcing one head to handle both directions, Sony gave each direction its own fixed head with its own azimuth. Where most portable players cut corners, the EX999 used two playback heads and a chassis built to protect them. The result preserved high frequencies in both directions and avoided the tonal drift that most auto-reverse systems developed over time.

Sony Walkman in 1993 View all Walkman models >