Network Walkman in 2015

The NW-ZX2 is the second-generation model part of the ZX series. It features 128GB of internal storage and supports audio playback in MP3, AAC, WMA, FLAC, ALAC, AIFF, Linear PCM, and DSD formats. It has a touch display and supports Bluetooth, Wi-Fi, NFC, USB connectivity, WM-PORT connectivity, video and photo playback, and various audio processing functions.

The NW-ZX100 is a premium ZX Series Walkman that took the line in a more focused direction after the earlier Android-based models. It kept 128 GB of internal storage, high-resolution audio support, microSD expansion, Bluetooth, NFC, direct USB, WM-PORT, and Sony's advanced audio processing features, but abandoned Android in favor of a proprietary music-focused system centered on long battery life and simpler operation. The ZX100 is where Sony pulled the ZX line back toward dedicated playback and away from the compact-Android-device logic of the ZX1 and ZX2. That shift matters more than any single spec because it clarified something Sony itself had been wobbling on: a premium Walkman did not need to imitate a smartphone to justify its existence. The ZX100 feels cleaner in purpose. Better endurance, physical controls, and a more traditional listening-first shape made it much easier to understand what the ZX line was actually for.

The NW-A25 is a 9th-generation A Series Network Walkman with 16 GB storage supporting MP3, WMA, AAC, FLAC, ALAC, AIFF, and Linear PCM playback. A lithium-ion battery provides up to 50 hours of use with digital noise cancellation. The A25 is part of the period where the A Series stopped trying to be a miniature media gadget and started settling into the role it would hold for years: Sony's compact serious-listener Walkman. It is smaller, calmer, and more disciplined than a lot of the A models that came before it, which is exactly why it matters. Sony was no longer trying to make the A Series into a catch-all premium object. It was starting to define it as the more portable, more approachable counterpart to the larger premium branches above it.

The NW-A25HN is a 9th-generation A Series model with 16 GB storage supporting MP3, WMA, AAC, FLAC, ALAC, AIFF, and Linear PCM playback. A lithium-ion battery provides up to 50 hours of use with digital noise cancellation. Earphones were bundled. The HN variant is best understood as a packaging branch of the same compact high-resolution A platform instead of a separate step in the line. The player's real importance stays the same: this was part of the generation where the A Series became much easier to place in Sony's lineup. The bundled earphone angle changes the presentation, but not the role.

The NW-A26HN is a 9th-generation A Series Walkman offering 32 GB storage for MP3, WMA, AAC, FLAC, ALAC, AIFF, and Linear PCM playback. It uses a 50-hour lithium-ion battery with digital noise cancellation and includes bundled earphones. The A26HN extended that same compact high-resolution formula upward in storage without altering the underlying idea. By this point the A Series had become much less restless. Sony knew what this branch was supposed to be, and that confidence shows in how little it needed to justify itself. It is not trying to reinvent the line. It is simply one of the more complete versions of a product concept that had finally stopped moving around.

The NW-A27HN was the 64 GB model in Sony's ninth-generation A Series. It supported MP3, WMA, AAC, FLAC, ALAC, AIFF, and Linear PCM playback, with digital noise cancellation, WM-PORT, bundled earphones, and a lithium-ion battery rated for up to 50 hours. The higher storage made this compact high-resolution A platform feel complete. It gave listeners enough room for larger lossless libraries while keeping the non-Android A Series focused on battery life, portability, and local playback. Compared with earlier A models, the identity was clearer: small, premium, and dedicated to high-resolution listening without turning into a phone-like device.

The NW-S13 is a compact S Series Network Walkman that effectively replaced the E Series. It offers 4 GB storage supporting MP3, WMA, AAC, and WAV playback with a lithium-ion battery rated for 77 hours. Bluetooth, video and photo playback, and Clear Phase were included. The S13 is important because it shows the S Series taking over the role that had once belonged to the E Series. By this point Sony no longer needed both lines to do the same job, so the S family shifted closer to simple everyday Walkman territory while keeping slightly better battery life and a little more polish. It marks a handoff inside the lineup, where the S line stopped being the old feature-richer middle branch and became the practical mainstream compact one instead.

The NW-S13K is a compact S Series model that replaced the E Series. It provides 4 GB storage for MP3, WMA, AAC, and WAV files with a 77-hour lithium-ion battery, Bluetooth, speaker output, video and photo playback, and Clear Phase. The speaker K variant completed the entry-level handoff from the E Series. It is the same handoff-generation S platform with speaker packaging added on top. That matters mostly because it confirms how settled the core player had become. Sony was comfortable extending it into speaker variants because the base role was already obvious.