Throughout the long history of car audio, the process of upgrading a factory head unit has been standard practice for those who demand greater sound quality, power, and features. It was often the case that the manufacturer installed OEM car stereos were feature-poor, and there weren't many downsides to replacing it with an aftermarket head unit.


The landscape of aftermarket and OEM car stereos is more complicated today, and many owners of late-model vehicles asking themselves the question of whether losing OEM features is worth the trade-off of getting better sound quality from an aftermarket head unit. With the rise of infotainment systems, integration with steering wheel controls and voice controls, and OEM telematics systems like OnStar, simply popping out a factory head unit and installing a powerful new aftermarket one actually can impact or disable a lot of great features. However, with some careful planning, the right adapters, and accessories, it’s possible to upgrade a modern factory head unit without losing anything.


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