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head unitThe control center and user interface for an automobile's entertainment center, which typically resides in the center of the dashboard. It provides the main controls for the radios (any combination of AM, FM, XM, Sirius, HD Radio) as well as a CD/DVD player, GPS navigation, Bluetooth cellphone integration, hard disk storage for music and iPod connector. There may be auxiliary controls on the steering wheel.
The head units have their own amplifiers for powering the speakers, but may have optional outputs for more powerful, stand-alone amplifiers. They may also have inputs for smartphones (see CarPlay and Android Auto). See in-dash navigation.
|After Market Head Unit|
|This Pioneer model Z110 replaced the original equipment AM/FM/CD head unit in a 2008 Honda, but the speakers were not changed. The Z110 added GPS navigation, DVD and iPod playback, hands-free phoning and several other features.|
|Out of the Vehicle|
|The Eclipse after market navigation system on the left replaced the factory head unit on the right.|