WM-WX777

The WM-WX777 is the most refined model in Sony's WX wireless cassette Walkman line, built around a high-frequency transmitter and matching receiver built to reduce interference and improve day-to-day reliability. The main player handled cassette playback in a conventional body, while the separate Hi-Band receiver took over volume, playback start, and track control duties, effectively functioning as both listening device and pocket remote. Auto-reverse, Dolby B, Extended DBB, AVLS, Automatic Music Sensor, blank skip, logic control, and LCD status display completed a package that was trying to make cord-free listening feel routine instead of experimental.

This is one of those models where Sony's wireless branch finally starts feeling settled. Earlier wireless Walkman often felt like ambitious proofs of concept, but the WX777 reads closer to a machine built around actual use: fewer dropouts, more stable control, less novelty for novelty's sake. It stands as a good example of Sony staying with a strange idea long enough to make it genuinely livable.