Before shopping for a mobile entertainment system, you need to know what you can afford and how much you are willing to spend. Mobile entertainment systems vary in availability and complexity and can cost anywhere from a few hundred to a few thousand USD.;
, What sort of features do you need? What sort of features do you want? You must answer these 2 questions. The 2 questions are similar but very different. Needs are absolutely necessary whereas wants are desirable but expendable.
 If your budget is small, you would probably be better off buying components 1 at a time. If your budget is large, you should be able to purchase an entire system at once.
 Component systems connect directly into your car's audio system and they provide screens that can be installed throughout the car. Most high-end car stereo retailers have these systems in availability.
 No matter what sort of mobile entertainment system you purchase, be sure to check that it can be expanded in the future. You never know when your budget will expand and allow for additions to be made down the road.
 The double-antenna, also known as a diversity antenna, receives better reception when the car is in motion.
 Mobile entertainment systems require a noticeable amount of electrical power, and if your car can't handle it then it will not work correctly. If necessary, you should contact a professional to assess the situation.
 This will help you to make the best decision.
Set your budget.
Determine your needs and wants.
Decide if you want a full system or individual components.
Select a component system.
Check for expandability.
Consider a double antenna if you're going for a mobile entertainment system that can tune into television channels.
Confirm your car's electrical capacity.
Combine all of your needs, wants, constraints, and available options and narrow down your list of options according to those factors.
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