The audio system of the car is a fascinating piece of connected devices that it is very difficult to achieve because a lot of satisfaction when you finish the situation, especially alone. Upgrading the sound system is already installed in the car must always be a priority, especially for people who simply can not live without a decent audio system in their car. You must first update since most of the time, the components pre-installed audio system are often the factory and are specialized in a high-quality sound to offer . In fact the means of most car owners who know the basics of car audio systems, these components typically offer low sound quality is very poor compared to the routine, even component.The first component is necessary to consider the head unit. This component is the most important component that should be greatly improved. This unit will be completed with the addition of other components, much better. On the other hand, no, you can be sure that all other acquisitions are not ultimately used to achieve their maximum potential. Its very sad, because you pay in full for an item, but unable to realize its potential. The main unit is the control of the entire system, so no, it can perform correctly and without that your product does not work properly.The main unit is designed for music files can be in the form of an MP3 file, can also take the form of CDs and DVDs every time you bought a new device and is up to date, in fact, how play a wide range of audio files that can play some of the new head unit and video files with a separate screen or monitor, or in some models of head units built with its LCD screen.Some of the new models can also be used for a variety of Bluetooth devices to use hands-free calls and even SMS messages to be connected. A new model that is well received in the market for a GPS and a transmission that can have a locator or a navigation system. These models are very price because not only the needs of the audio drivers, but also helps faster. Some are even voice activated and often speak of a turning point when required, or if the satellite indicates that the vehicle was close to your destination. Make sure the machine has been installed, the power supply is connected compatible components. Try online JVC head units of view, some of them are amazing.