Sony NWMS9 Digital Music Player Network Walkman

The Sony NW-MS9 Network Walkman represents an early chapter in portable digital music, designed for listeners who wanted to carry their CD rips and downloaded tracks in a pocket-sized device. It supports a broad range of audio formats for its time — ATRAC3, MP3, WMA, and Liquid Audio — giving users flexibility with their music libraries. The included 64MB MagicGate Memory Stick Media provides up to 120 minutes of playback depending on the encoding bitrate, and swappable Memory Sticks let you expand your library on the go.

As an SDMI-compliant device, the NW-MS9 incorporates digital rights management features that were standard in its era. Music is loaded via a computer using Sony's transfer software, which means you will need compatible software to manage your library. While the 64MB storage and proprietary media format feel limiting compared to modern players, the NW-MS9 remains a collectible example of Sony's early portable digital audio engineering and the compact industrial design the Walkman line was known for.