1Sound Adapter: This sound converter helps car speakers convert high frequency signals into low signals. In addition, the installation is very simple and can be completed in just a few minutes. 2Wonderful Sound: The trapezoidal structure design can reduce noise and leakage affecting sound quality, so that you can easily enjoy wonderful and comfortable music during the process of driving. 3High Power Amplifier: Built in high power amplifier tube can provide strong shock and subwoofer effect, immersive listening is unforgettable, you will love it! 4Better Besign: The compact design will save space, and the iron horn shield can effectively protect the speaker from impact and extrusion, which is both beautiful and practical. 5Easy to Use: Full frequency mode has better sound quality, low frequency mode has the most shocking effect. You can choose the right music mode according to your own preferences, easy to use.