| Composition | KENWOOD KMM-257 | Pioneer AVH-P4250DVD |
| Tuner | has a digital | has a digital |
| CD players | no | yes |
| MP3-players | yes | yes |
| DVD-player | no | yes |
| Blu-ray player | no | no |
| Amplifier | yes | yes |
| Equalizer | yes | yes |
| Navigator | no | no |
| TV tuner | no | no |
| General characteristics | KENWOOD KMM-257 | Pioneer AVH-P4250DVD |
| Nominal and maximum power | 4x30 W/4x50 W | |
| Maximum power | | 4x50 W |
| Size | 1 DIN | 2 DIN |
| CD-changer interface is | no | IP-Bus (Pioneer) |
| Management changer | | CD, DVD |
| Color | black | black |
| Supported carriers and formats | KENWOOD KMM-257 | Pioneer AVH-P4250DVD |
| Formats | MP3, WMA, AAC, FLAC | CD-Audio, DVD-Video, MP3, MPEG4, WMA, AAC, JPEG |
| Media | iPod | CD-R, CD-RW, VCD, DVD R, DVD RW |
| Memory card support | | SD, MMC |
| Decoder | | Dolby Digital, DTS |
| Standards support | | PAL, SECAM, NTSC |
| Display | KENWOOD KMM-257 | Pioneer AVH-P4250DVD |
| Display type | monochrome | multicolor |
| Display diagonal | | 7 inch |
| Display format | | 16:9 |
| Angle adjustment panel | | yes |
| Management | KENWOOD KMM-257 | Pioneer AVH-P4250DVD |
| Infrared remote | no | yes |
| Joystick on the steering wheel | it is possible to connect | no |
| Search for a folder/file | yes | yes |
| Auto plants | yes | yes |
| Multicolor lighting | | yes |
| Pause when speaking on the phone | | yes |
| Interfaces | KENWOOD KMM-257 | Pioneer AVH-P4250DVD |
| Inputs | USB | video composite video USB |
| Front panel USB | yes | |
| Audio input on the front panel | yes | no |
| Outputs | audio | composite video |
| Bluetooth Support | no | no |
| Supports rear-view camera | | yes |
| Tuner | KENWOOD KMM-257 | Pioneer AVH-P4250DVD |
| Support band | FM, MW, LW | FM, MW |
| RDS | RDS RDS/EON, RDS, PTY | |
| Switching stereo/mono | yes | |
| Tuner with long reception | yes | yes |
| Number of preset FM/AM | 18 / 3 | |
| Additional information | KENWOOD KMM-257 | Pioneer AVH-P4250DVD |
| Adjusting the voice | yes | yes |
| ID3 tag support | yes | yes |
| Tone compensation | yes | |
| Dimensions (WxHxD) | 182x53x107 mm | 178x100x180 mm |
| Weight | 640 g | |
| CD-text | | yes |
