A. This junction box for car audio amplifier modification is a practical and good-quality option. It is made of zinc alloy, which is sturdy and durable, and can provide reliable support for the stable operation of the car audio system. B. In terms of design, its dimensions are 70*50*30 (mm). It is small and delicate, taking up little space, and is easy to install and arrange in the car. C. It has a wide range of uses and is specially designed for vehicles, suitable for various types of cars. No matter what kind of car you drive, you can use it to optimize the car audio amplifier system. In terms of performance, its voltage range is 12 - 48 (V), the power is 10 (W), and the signal-to-noise ratio is 10 (dB), which can effectively improve the sound quality of the car audio and allow you to enjoy a better music experience while driving. D. In addition, this product has an authorized self-owned brand, which can ensure a certain level of quality. Its sales cover multiple regions such as Africa, Europe, South America, Southeast Asia, North America, Northeast Asia, and the Middle East, and it is trusted by users in various places. It is a good choice for car audio modification.