OUR ALL NEW XFL SERIES AMPLIFIERS ARE POWERFUL AND DISCREET. Using all new microtechnology, this series offers two four channel, class D, full-range amplifiers and a class D mono block amplifier. These amplifiers are great to fit all your car audio needs, from a simple upgrade to your factory system to competition applications without breaking the bank. The XFL amplifier has high quality sound processing and a surprising amount of power in such a small amplifier. This series is still growing so we will have other models soon.