This is a hot-selling car audio EQ high, mid, and low tone frequency divider with a 7-band equalization design that includes gain adjustment. It can finely tune the high, mid, and low frequencies of your car audio system. Through its unique 7-band equalization design, it creates a personalized auditory experience, ensuring that every audio segment reaches its ideal state, making the music more detailed and well - structured. This product is designed with wide applicability, being compatible with all common car models. No matter what type of vehicle you own, it can be easily paired. Whether you're a fan of the passionate and energetic rock music or the soothing and elegant classical music, this frequency divider can help you achieve high - quality sound output. It adds wonderful musical accompaniment to your driving journey, allowing you to enjoy a professional - grade audio experience while on the road.