Compact Body and Powerful Bass Extremely compact, yet deceivingly powerful, the latest Pioneer TS-WX400DA is the perfect subwoofers for cars with limited space, such as small hatchbacks and sedans. Now you can enjoy the same addictive deep and solid bass offered by our regular subwoofers, plus the benefits of greater convenience and connectivity. Easy Install Measuring merely 30cm wide, 20cm deep and 10cm tall, it is cleverly designed to fit under most car seats and the least imaginable spaces, which makes installation a snap for just about all vehicles on the market. Selectable Bass Mode Choose a Bass Mode to tune the bass in whichever way you like, according to type of music. DEEP Bass Mode Achieve rich, deep sound quality with DEEP Bass Mode tuning based on precise statistical measurement of sound characteristics in four kinds of vehicle. Suitable for classical, jazz, country and other music.. DYNAMIC Bass Mode For more sensational experiences of body-rocking bass power, suitable for listening to electronic dance, hip-hop, rock and other music in a car. Built-in DSP Class-D Amplifier With Class-D amplifier technology, the subwoofer generates impressive 250 W maximum power, consumes power at levels low enough to keep the unit compact and easy to install, and requires no direct battery connection (max. consumption current: 9.4A).