Designed to offer an ideal amplification solution for powering a full speaker setup that uses four speakers plus subwoofer. Includes high and low pass filters plus subsonic filters as well as a variable bass boost that can be used to best effect with a dedicated subwoofer control. ICEpower full-range Class D operation. Attractive design for practicality and ease of use with all controls such as level, crossover, low frequency boost and high/low pass filter adjustments mounted on the top panel. Output terminals conveniently located to allow multiple in-line unit installations. Bright LED indicators also mounted on the top assist in setting system levels to prevent amplifier clipping. Very high efficiency rate with low current draw. XA5000/XA4000/XA2000 incorporate ICEpower technology.