1. This audio cable is specifically designed for car subwoofer modification and is an ideal signal cable for connecting the car audio system and the power amplifier. It is made of pure copper, which has good electrical conductivity. This can ensure the stable and clear transmission of audio signals, effectively reduce signal loss and interference, and enable the car audio system to deliver good sound quality, allowing you to enjoy a pleasant music experience. 2. In terms of specifications, it is available in a variety of lengths, including 0.5 meters, 1 meter, 2 meters, 3 meters, and 5 meters. You can freely choose the appropriate length according to your actual installation needs to meet the diverse requirements of different car models and installation environments. 3. The careful design not only ensures good performance but also offers good durability, enabling it to adapt to the complex environmental conditions inside the car. 4. Whether you are listening to music during daily driving or seeking good car audio effects, this audio cable will be your reliable assistant, creating an immersive in - car music space for you.