The XFL is a world-renowned, record-breaking subwoofer that delivers power and quality beyond the competition. With its rock-solid structure and crisp, clean power output, the XFL offers reliability and top-notch performance and will make your car come alive with power and sound. And since being introduced, the XFL has become our premier sub – proving that when it comes to big sound, you don’t have to mess around! Paired with a high quality amplifier like the DD Audio SS3000, you'll be ready to experience a new level of music!