2008 NW-A828
The NW-A828 is a Network Walkman with flash memory, part of the 4th generation A series.
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The NW-S14 is a twelfth-generation S Series Network Walkman with 8 GB storage supporting MP3, WMA, AAC, and WAV playback. A lithium-ion battery supplied up to 77 hours of use with Bluetooth, video and photo playback, and Clear Phase. AptX codec support was added to the S Series.
This unit is part of the very late S phase where the line had been simplified so much that it was effectively inheriting some of the role the E Series uses to occupy. It still carries the cleaner late S DNA , compact, playback-first, personal , but by then the branch felt more modest and more everyday than the more feature-rich S generations that came before it. Sony was no longer trying to keep every old branch alive in its previous form. It was consolidating.