This manual explains how to set up and operate the Sony D-NE9 portable CD player, also called an “ATRAC CD Walkman.” It includes safety precautions, battery information, and guidance for connecting the player to a stereo system or power source. The guide also describes the ATRAC3plus/ATRAC3 and MP3 formats supported by the device.
The document covers disc format requirements, file‑naming rules, and limits on groups and files. It provides details on playback options such as shuffle, bookmarks, and playlists, as well as troubleshooting, maintenance, and optional accessories.
| Maximum directory levels | 8 |
|---|---|
| Acceptable characters for file/folder name | A-Z,a-z,0-9,_ |
| Maximum number of groups (ATRAC) | 255 |
| Maximum number of files (ATRAC) | 999 |
| MP3 transfer bit rate range | 16 - 320 kbps |
| MP3 sampling frequencies | 32/44.1/48 kHz |
| Supported disc formats | ISO 9660 Level 1/2 and Joliet extension |
The player can play Audio CDs, ATRAC3plus/ATRAC3 format files, and MP3 files.
Up to 255 groups and 999 files can be stored on an ATRAC CD.