A digital car radio is a type of high definition audio. Frequently digital radio will include satellite radio hook up and be a component of hd car stereos. This type of radio is becoming more and more common in the new vehicles. For those that love music and spend a lot of time in the car, high definition radio is a good investment.
Almost any car system can be converted to digital with an adapter. The main cost is in the adapter as digital radio is free. There are additional stations available. Also be aware that there are no tuning issues as you will get good reception anywhere with satellite radio. The technology used for the adapter is a type of wireless technology that is used widely around the world.
With a digital and HD system, it is important that the rest of the car stereo components are appropriate for the system. With the correct components the sound produced will be out of this world. Upgrade speakers and see about adding an amplifier and subwoofer. A full system is not inexpensive but will completely transform the audio.
A digital radio system can consist of a receiver that will plug into the stereo system. This receiver can easily be removed and added so you can carry it with you. This ensures that the receiver cannot be stolen as you can bring it with you. This also allows you to use the receiver in all different vehicles as these can plug into the current stereo system. Many receivers also make it possible to plug in other music media.