| Composition | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| Tuner | | has a digital |
| Cassette deck | no | yes |
| CD-player | yes | |
| CD players | | yes |
| MP3-player | yes | |
| MP3-players | | no |
| DVD-player | no | |
| Blu-ray player | | no |
| Radio | yes | |
| Amplifier | yes | yes |
| TV tuner | no | |
| Equalizer | yes | yes |
| CD-changer | no | |
| Navigator | | no |
| GPS-receiver | no | |
| General characteristics | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| Nominal and maximum power | | 4x22 W/4x47 W |
| Management changer | | CD |
| CD-changer interface is | | custom |
| Size | 1 din | |
| Number of channels | 4 | |
| Supported carriers and formats | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| Formats | | CD-Audio |
| Media | | cassette |
| Output power | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| Maximum | 50 W | |
| Display | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| Display type | | multicolor |
| Type | monochrome | |
| Adjust backlight brightness | no | yes, automatic |
| Sensory | no | |
| Motorised | no | |
| Turning | no | |
| Tilt panel | no | |
| Cassette deck | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| Auto tape | | yes |
| Noise reduction | | DolbyB |
| Auto reverse | | yes |
| To search for music on cassette | | yes |
| Skip pause on the tape | | yes |
| Supported carriers | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| CD-R | yes | |
| CD-RW | yes | |
| Management | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| Multicolor lighting | | yes |
| Infrared remote | | yes |
| Joystick on the steering wheel | | no |
| Pause when speaking on the phone | | yes |
| Memory disk names | | yes |
| Formats | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| WMA | yes | |
| ID3 tag support | yes | |
| Interfaces | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| USB-port | yes | |
| Outputs | | audio |
| Front USB | yes | |
| Connecting the ISO | | yes |
| Gold-plated connectors | no | yes |
| Wi-Fi | no | |
| Bluetooth | no | |
| A2DP | no | |
| Protection | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| Detachable panel | yes | yes |
| Security codes | no | |
| Damping suspension | no | |
| Tuner | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| Support band | | FM, MW, LW |
| RDS | | RDS |
| Inputs | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| Optical audio input | no | |
| Audio input on the front panel | yes | |
| Composite video input | no | |
| Component Video Input | no | |
| To connect the navigation system | no | |
| Additional information | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| Super-bass | | yes |
| Adjusting the voice | | yes |
| Disabling voices | | yes |
| Single-bit DAC architecture | | yes |
| CD-text | | yes |
| Resampling audio | | 8 |
| Tone compensation | | yes |
| Dimensions (WxHxD) | | 180x100x160 mm |
| Features | | Sleep timer (20/40/60 min). Possibility to change the button illumination. Calendar with memory. System of memorizing the audio settings. Playback of CD-R/RW discs. Tape counter. |
| Outputs | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| Audio output | yes | |
| Audio output stereo | no | |
| Audio output PreAmp front | no | |
| Optical audio output | no | |
| Digital coaxial audio output | no | |
| Composite video | no | |
| S-Video | no | |
| On headphones | no | |
| Component video output | no | |
| Functionality | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| Infrared remote | no | |
| DSSA | no | |
| Audio cruise control | no | |
| Memory disk names | no | |
| Loudness | no | |
| Disabling Voice | no | |
| Clock | yes | |
| Search folders / files | no | |
| Support rear view camera | no | |
| Android operating system | no | |
| The one-bit DAC architecture | no | |
| Backlit keys | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| Backlit | yes | |
| Adjust backlight brightness | no | |
| Support band | KENWOOD KDC-W4051UY | KENWOOD DPX-4020 |
| FM | yes | |
| MW | yes | |
| VHF | no | |
| Digital tuner | yes | |
| Auto plants | yes | |
| Number of preset radio | 21 | |
| Number of preset FM | 18 | |
| Number of preset AM | 3 | |
| Stereo / Mono | no | |
| Recording function | no | |
