| Composition | KENWOOD KRC-591 | KENWOOD DPX-4020 |
| Tuner | has a digital | has a digital |
| Cassette deck | yes | yes |
| CD players | no | yes |
| MP3-players | no | no |
| Blu-ray player | no | no |
| Amplifier | yes | yes |
| Equalizer | yes | yes |
| Navigator | no | no |
| General characteristics | KENWOOD KRC-591 | KENWOOD DPX-4020 |
| Nominal and maximum power | 4x29 W/4x47 W | 4x22 W/4x47 W |
| Management changer | CD, MD | CD |
| Frequency range | 30-18000 Hz | |
| CD-changer interface is | custom | custom |
| Supported carriers and formats | KENWOOD KRC-591 | KENWOOD DPX-4020 |
| Formats | | CD-Audio |
| Media | cassette | cassette |
| Display | KENWOOD KRC-591 | KENWOOD DPX-4020 |
| Display type | bicolor | multicolor |
| Adjust backlight brightness | yes, automatic | yes, automatic |
| Cassette deck | KENWOOD KRC-591 | KENWOOD DPX-4020 |
| Auto tape | | yes |
| Noise reduction | DolbyB | DolbyB |
| Auto reverse | | yes |
| To search for music on cassette | | yes |
| Skip pause on the tape | | yes |
| Management | KENWOOD KRC-591 | KENWOOD DPX-4020 |
| Multicolor lighting | | yes |
| Infrared remote | no | yes |
| Joystick on the steering wheel | no | no |
| Pause when speaking on the phone | yes | yes |
| Memory disk names | | yes |
| Interfaces | KENWOOD KRC-591 | KENWOOD DPX-4020 |
| Outputs | audio | audio |
| Connecting the ISO | yes | yes |
| Gold-plated connectors | | yes |
| Protection | KENWOOD KRC-591 | KENWOOD DPX-4020 |
| Detachable panel | yes | yes |
| Tuner | KENWOOD KRC-591 | KENWOOD DPX-4020 |
| Support band | FM, MW, LW | FM, MW, LW |
| RDS | RDS RDS/EON | RDS |
| Additional information | KENWOOD KRC-591 | KENWOOD DPX-4020 |
| Signal/noise ratio | 65 dB | |
| Weight | 1200 g | |
| 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) | 182x53x150 mm | 180x100x160 mm |
| Features | Possibility to change the button illumination. Settings memory frequency for each audio source. Calendar with memory. Sleep timer (20/40/60 min). | 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. |
