The JL Audio JX400/4D 4-channel car amplifier delivers clean and powerful sound to your car audio system. With 70 watts RMS x 4, this amplifier can drive a variety of speakers, providing crisp and clear sound even at high volumes. The compact design of the JX400/4D makes it easy to install in any vehicle, and the built-in crossover and selectable bass boost allow you to customize the sound to your liking. Whether you're a casual listener or an audiophile, the JL Audio JX400/4D is a great addition to any car audio system.