This is a junction box specifically designed for the modification of car audio power amplifiers. As a hub, it can achieve a one-to-eight function, dividing one ground wire signal into eight outputs to meet the wiring needs of complex car audio systems. Its outstanding feature lies in its excellent design, which can be well adapted to various car models. The matching relationship is at the original equipment level, which means that its quality and compatibility reach a very high standard, and it can be used regardless of your car model. This junction box can not only solve the complex circuit connection problems in the car audio system but also is equipped with a negative fuse holder, which can effectively ensure the safety of the circuit and avoid damage to the audio equipment caused by abnormal current and other problems. Whether you are upgrading, modifying, or maintaining and debugging your car audio, this junction box is a practical and reliable choice. It is widely applicable in many regions around the world, including Africa, Europe, South America, Southeast Asia, North America, Northeast Asia, and the Middle East, and is favored by many users. If you are troubled by the circuit connection problems of your car audio, you might as well choose this junction box to bring more stable and outstanding performance to your car audio system.