| Composition | KENWOOD KDC-8021 | KENWOOD DDX-6039 |
| Tuner | has a digital | has a digital |
| CD players | yes | yes |
| MP3-players | no | yes |
| Blu-ray player | no | no |
| DVD-player | | yes |
| Amplifier | yes | yes |
| Equalizer | yes | yes |
| Navigator | no | no |
| TV tuner | | no |
| General characteristics | KENWOOD KDC-8021 | KENWOOD DDX-6039 |
| Nominal and maximum power | 4x20 W/4x50 W | |
| Management changer | CD | CD, DVD |
| CD-changer interface is | custom | custom |
| Maximum power | | 4x50 W |
| Size | | 2 DIN |
| Color | | black |
| Supported carriers and formats | KENWOOD KDC-8021 | KENWOOD DDX-6039 |
| Formats | CD-Audio | CD-Audio, DVD-Video, MP3, WMA, AAC, JPEG |
| Media | | CD-R, CD-RW, VCD, DVD R, DVD RW |
| Decoder | | Dolby Digital, DTS |
| Standards support | | PAL, NTSC |
| Display | KENWOOD KDC-8021 | KENWOOD DDX-6039 |
| Display type | multicolor | multi-color, touch |
| Adjust backlight brightness | yes, automatic | yes, automatic |
| Display dimensions | | 156 x 82 mm |
| Display diagonal | | 6.95 inch |
| Display format | | 16:9 |
| Angle adjustment panel | | yes |
| Adjusting the brightness of the display | | yes, manual |
| Management | KENWOOD KDC-8021 | KENWOOD DDX-6039 |
| Multicolor lighting | yes | |
| Infrared remote | yes | yes |
| Joystick on the steering wheel | no | no |
| Pause when speaking on the phone | yes | yes |
| Memory disk names | yes | |
| Search for a folder/file | | yes |
| Auto plants | | yes |
| Interfaces | KENWOOD KDC-8021 | KENWOOD DDX-6039 |
| Audio input on the front panel | no | no |
| Outputs | audio | audio, video, composite |
| Inputs | | composite video |
| Bluetooth Support | | no |
| Supports rear-view camera | | yes |
| Protection | KENWOOD KDC-8021 | KENWOOD DDX-6039 |
| Detachable panel | yes | |
| Rotatable display | yes | |
| Tuner | KENWOOD KDC-8021 | KENWOOD DDX-6039 |
| Support band | FM, MW, LW | FM, MW |
| Dynamic range | 93 dB | |
| RDS | RDS | RDS RDS/EON, RDS, PTY |
| Switching stereo/mono | | yes |
| Tuner with long reception | | yes |
| Number of preset FM/AM | | 18 / 6 |
| Additional information | KENWOOD KDC-8021 | KENWOOD DDX-6039 |
| Super-bass | yes | |
| Adjusting the voice | yes | yes |
| Single-bit DAC architecture | yes | |
| Signal/noise ratio | 105 dB | |
| CD-text | yes | yes |
| Resampling audio | 8 | |
| Crosstalk | 95 dB | |
| Tone compensation | yes | yes |
| Dimensions (WxHxD) | 180x50x150 mm | 178x100x180 mm |
| Features | Compatibility with CD-R/RW. | |
| The number of bit DAC | | 24 |
| ID3 tag support | | no |
| Weight | | 2600 g |
