Enhance your in-car audio experience with the Diesel Audio NS-Q3 4 Band Parametric Equalizer. This top-of-the-line equalizer is designed to give you the ultimate control over your audio system's sound quality. With its four bands and parametric design, you can adjust the frequency response of your music to your liking. Experience crystal-clear sound and deep bass with the Diesel Audio NS-Q3. This equalizer is perfect for car enthusiasts who demand the best in-car entertainment. It is easy to install and use, and is compatible with most vehicles. Upgrade your audio system today with the Diesel Audio NS-Q3 4 Band Parametric Equalizer.