A. This is a wire accessory specifically designed for upgrading car audio systems, including vehicle power cords and speaker wires. Its unique terminal design features a pure copper tube with a gold-plated sleeve, which can significantly improve the connection performance of the car audio system. B. In terms of specifications, there are multiple options available, including 0GA, 2GA, 4GA, 6GA, 8GA, 10GA, 12GA, and 14GA. These choices can meet the diverse needs of different car audio system upgrades, regardless of the scale of the car audio system. C. This product is suitable for car audio system upgrade scenarios and can effectively improve the stability and sound quality of the audio system. The gold-plated pure copper material ensures good conductivity, reduces signal loss during transmission, and allows your car audio to perform better, creating an immersive music experience for you. D. It is popular in regions such as Africa, Europe, South America, Southeast Asia, North America, Northeast Asia, and the Middle East, and is a good choice for car audio enthusiasts to upgrade their audio systems.