2004 NW-HD1
The NW-HD1 is the first Network Walkman to feature a built-in hard drive.
Network Walkman
HDD Network Walkman
Before flash memory became dominant, Sony explored hard-disk storage in its Network Walkman lineup. The HD Series introduced the format with ATRAC-focused playback and shock-protected drives, while later A Series models merged hard disk and flash into a unified platform with broader codec support and OLED displays. These models represent a short but important transition period where capacity, software ecosystem, and device identity were all being redefined.
2004 NW-HD2
The NW-HD2 is a model part of the first generation of Network Walkmans equipped with a hard disk.
2004 NW-HD3
The NW-HD3 is a later model of the first-generation Network Walkman equipped with a hard disk.
2005 NW-HD5
The NW-HD5 is a second-generation Network Walkman equipped with a hard disk.
2005 NW-HD5H
The NW-HD5H is a high-capacity model part of the second generation of hard disk Walkmans.
2005 NW-A1000
The NW-A1000 is a Walkman with a hard disk drive, part of the first generation A series.
2005 NW-A1200
The NW-A1200 is a Sony Style exclusive model of the first-generation A-series Walkman equipped with a hard disk drive.
2005 NW-A3000
The NW-A3000 is a Walkman with a large-capacity hard disk, part of the first generation A series.
