The Q-Class is the series of Kicker car subwoofers that sets the bar for dynamically refined bass sound. Choose Kicker L7 subwoofers for bass that’s big yet accurate or get the CompQ subwoofer series if you want to hear every detail. They are the most stable and powerful woofers Kicker has ever produced. L7 loaded subwoofer boxes are an award-winning way to experience the low end. Add a Kicker car subwoofer amplifier to bring out the best of your bass.