| FEATURES | DS-2200 | DS-3000 | DS-4000 | ||
| File Format/Recording Modes | DSS(LP/SP) / WMA(HQ/SHQ) | DSS(LP/SP) | DSS(LP/SP) | ||
| Memory | Type | xD-Picture Card | SmartMedia | xD-Picture Card | |
| Included | 128MB | 16MBx2 | 32MB | ||
| Maximum | 512MB | 128MB | 512MB | ||
| Maximum Recording Time | Sp Mode | 84hrs. 05min | 22hrs. 50min | 84hrs. 05min | |
| LP Mode | 179hrs. 30min | 44hrs. 40min | 179hrs.30min | ||
| HQ | 35hrs. 30min | N/A | N/A | ||
| SHQ | 17hrs. 45min | N/A | N/A | ||
| LCD Display | Type | Full Dot | Dot Character | Full Dot | |
| Backlight | √ |
| √ | ||
| LED (2 Colors) | √ | √ | √ | ||
| Slide Operation | N/A | N/A | √ | ||
| Programmable Buttons | N/A | N/A | √ | ||
| Hands-free Recording | N/A | N/A | √ | ||
| Power Switch | N/A | √ | √ | ||
| Battery Type | AAAx2 | AAAx2 | Ni-MH battery pack or AAAx2 | ||
| Rechargeable | N/A | N/A | √ | ||
| Volume | Push | Rotary | Push | ||
| Internal Microphone | √ | √ | √ | ||
| Speaker | 23mm, 8 ohm | 28mm, 8 ohm | 28mm, 8 ohm | ||
| Mic Jack | 3.5mm | 3.5mm | 3.5mm | ||
| Ear Jack | 3.5mm | 3.5mm | 3.5mm | ||
| Power Jack | √ | √ | N/A | ||
| Storage Class | √ | N/A | √ | ||
| Audio Class | N/A | N/A | √ | ||
| Direct Recording To Pc | N/A | √ | √ | ||
| Cradle | √ | N/A | √ | ||
| Folder | 5 | 3 | 1 to 7 (programmable) | ||
| Number Of Files Per Folder | 199 | 199 | 199 | ||
| Operation Alarm | √ | √ | √ | ||
| Pre-end Alarm | √ | √ | √ | ||
| Alarm Playback | √ | √ | N/A | ||
| Microphone Sensitivity Setting | 2 levels (conf/dict) | 2 levels (conf/dict) | 2 levels (conf/dict) | ||
| VCVA | √ | √ | √ | ||
| Erase Lock | √ | √ | √ | ||
| Folder Rename Via Software | √ | √ | √ | ||
| File Move | √ | √ | N/A | ||
| Index | Up to 16 (DSS/WMA file) | Up to 16 | |||