Conversion Function: When the original car head unit is not equipped with RCA audio output, this car line audio output converter can convert the high-level audio signal output by the speaker into a low-level audio signal and output it to the car amplifier or subwoofer. | High-quality Materials: This car line audio output converter is made of high-quality materials and has a compact internal structure, which can facilitate the normal operation of the vehicle system, especially the normal use of the audio output system. | Durability: This car line audio output converter has undergone multiple quality tests after it is manufactured to ensure that it can be used normally. After purchase, you will receive 2 x car line audio output converters, which are enough for daily use. | Simple Installation: The edge of the small hole of this car line audio output converter is marked with detailed functions, and you can connect the corresponding line according to the prompts. The outer shell of this car line audio output converter is waterproof and can protect the internal structure, so it can be used with confidence. | Universal Accessory: This car line audio output converter is a universal line modification accessory that can be used in a variety of vehicles, such as cars, SUVs, trucks, etc. If your vehicle's audio output is faulty, it can be retrofitted with it.