| Composition | Digma DCR-400R | Digma DCR-550 |
| CD player | no | no |
| MP3 player | yes | yes |
| DVD player | no | no |
| Radio | yes | yes |
| TV tuner | no | no |
| Built-in Changer | no | no |
| Built-in GPS receiver | no | no |
| Amplifier | yes | yes |
| Equalizer | yes | yes |
| General characteristics | Digma DCR-400R | Digma DCR-550 |
| Size | 1 din | 2 din |
| Number of channels | 4 | 4 |
| Output power | Digma DCR-400R | Digma DCR-550 |
| Maximum | 45 Watt | 50 Watt |
| Equalizer | Digma DCR-400R | Digma DCR-550 |
| Tone Control | yes | yes |
| Super bass | no | no |
| Display | Digma DCR-400R | Digma DCR-550 |
| Type | multicolor | multicolor |
| Sensory | no | no |
| Motorized | no | no |
| Turning | no | no |
| Brightness adjustment | no | no |
| Panel angle adjustment | no | no |
| Carriers | Digma DCR-400R | Digma DCR-550 |
| SD/MMC card | yes | yes |
| Formats | Digma DCR-400R | Digma DCR-550 |
| WMA | | yes |
| Interfaces | Digma DCR-400R | Digma DCR-550 |
| USB port | yes | yes |
| USB on the front panel | yes | yes |
| Gold plated connectors | no | no |
| ISO connection | no | no |
| Wi-Fi | no | no |
| Bluetooth | no | no |
| A2DP | no | no |
| Inputs | Digma DCR-400R | Digma DCR-550 |
| Optical audio input | no | no |
| Front panel audio input | yes | yes |
| Composite video input | no | no |
| Component Video Input | no | no |
| To connect the navigation system | no | no |
| Outputs | Digma DCR-400R | Digma DCR-550 |
| Audio output | yes | yes |
| Stereo audio output | no | no |
| Audio Output PreAmp Subwoofer | no | no |
| Optical Audio Out | no | no |
| Digital coaxial audio output | no | no |
| Composite video output | no | no |
| S-Video | no | no |
| Headphones | no | no |
| Component Video Output | no | no |
| Functionality | Digma DCR-400R | Digma DCR-550 |
| Infrared Remote | no | no |
| Steering wheel joystick | no | yes |
| DSSA | no | no |
| Pause when talking on the phone | yes | no |
| Audio Cruise Control | no | no |
| Disk Name Memory | no | no |
| CD text | no | no |
| Tone Compensation | no | no |
| Mute tones | no | no |
| Clock | yes | yes |
| Search by folders / files | no | no |
| Support rear view camera | no | no |
| Android operating system | no | no |
| Single-bit DAC architecture | no | no |
| Key backlight | Digma DCR-400R | Digma DCR-550 |
| Backlight | yes | yes |
| Multicolor | no | yes |
| Brightness adjustment | no | no |
| Protection | Digma DCR-400R | Digma DCR-550 |
| Removable panel | no | no |
| Security Codes | no | no |
| Damping suspension | no | no |
| Tuner | Digma DCR-400R | Digma DCR-550 |
| Ranges | Digma DCR-400R | Digma DCR-550 |
| FM | yes | yes |
| LW | no | no |
| SW | no | no |
| MW | no | no |
| VHF | no | no |
| Digital tuner | yes | yes |
| HD Radio | no | no |
| Auto Search Stations | yes | yes |
| Number of presets FM | 18 | 18 |
| Long Range Tuner | no | no |
| Stereo / Mono Switch | no | no |
| Recording function | no | no |
| Dimensions | Digma DCR-400R | Digma DCR-550 |
| Width | 178 mm | 178 mm |
| Height | 50 mm | 100 mm |
| Depth | 180 mm | 180 mm |
