When purchasing a sound system for your car it is important to take your time an not dive straight in because not all sound system are the same. This sounds painfully obvious, but you’d be surprised at how many people do this.
Another thing to watch out for is not to try and save money by picking the cheapest sound system, there is a reason it is so cheap. This is definitely one of those things where you pay for what you get.
If you are prepared to pay a few more Dollars then your sound system could make it sound like that guitarist is actually in your back seat shredding their evh.