Give your sound system a boost with the Crunch Power X Series of amplifiers. The PX Series features SPEED-FET output technology that maximizes power efficiency while improving sound quality and minimizing distortion. They also use QTD (Quick Thermal Dispersion) technology which puts more aluminum on the heat sink than a normal amplifier. This 1-channel PX-1025.1 amp delivers a max power output of 1,000 watts to subwoofers. Crunch is the power of music.