The original audio systems of imported cars produced domestically are mostly OEM supporting products provided by well-known audio manufacturers (domestically produced), such as the "Guangzhou Honda" car from Japan's Pioneer Company, the "FAW Hainan Mazda" car from Alpi, the "Shanghai Volkswagen" and "FAW Volkswagen" car from Huizhou Zhongwu's VDO, and the sound systems provided by Panasonic for "Audi" and "Fengshen Bluebird", And Philips provides more supporting equipment for car audio equipment. Although these brands' car audio systems are not considered top-notch, they have undergone precise debugging by experts before leaving the factory, and the sound effect can meet general requirements. For car owners with higher requirements, they must try to modify them.

At present, most of the car audio modification in China is located in car supplies and car beauty decoration shops. The operators are small workers who lack audio experience and knowledge, and only use the brand and price of the equipment to promote car owners, causing owners who are already unfamiliar with audio to mistakenly believe that this is the entire content of car audio modification. Some modified audio systems not only fail to perform properly in terms of effectiveness and equipment performance, but also damage the original car's electrical system, leaving potential safety hazards for the car owner in the future. Many experts point out that the key to modifying a car's audio system is to see if it can be effectively debugged, and often, effective debugging is more important than brand.