Upgrade your car audio system with the Sound Storm Laboratories S4EQ 4 Band Pre Amp Car Equalizer. This powerful device from SSL comes equipped with a 4-band equalizer that allows you to fine-tune your sound and get the best audio experience possible. It's perfect for music lovers who want to elevate their driving experience to the next level. With features like a built-in subwoofer control and high-level input, this car equalizer is a must-have for anyone who wants to take their music to new heights. Whether you're a professional musician or just a casual listener, the SSL S4EQ has everything you need to enjoy your favorite tunes while on the road. Get yours today and experience the power of high-quality car audio!