1991 WM-GX90
The WM-GX90 is a Walkman with radio and recording functions.
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The WM-GX77 is a radio-recording Walkman from 1992 that combined cassette playback and recording with a worldwide FM/AM/TV tuner and an includes stereo microphone for external capture. Auto-reverse, Dolby B, Extended Dynamic Bass Boost, logic controls, and a recording-protection slide switch on the remote gave it a more considered and less accidental recording workflow than many simpler cassette portables. It remained compact enough to function as an ordinary Walkman while still carrying a much broader toolset than playback-only models.
This is the kind of machine that makes sense for people who still treated cassette as something active instead of passive. The GX77 was more than for listening to what you already had, but for pulling in broadcasts, making field recordings, or using the Walkman as a portable collection device. It is less of a casual radio variant and closer to a compact utility recorder that happened to live inside the Walkman family.