From the Manufacturer
The SW1 powered subwoofers were created to meet the needs of the demanding audiophile while delivering the dramatic Low Frequency Effects (LFEs) that are essential to any complete home theater. The SW1 is designed to add impact and realism to recorded music and film scores while fitting snuggly in small spaces. The SW1 comes equipped with a Class A/B 100 watt amplifier with a 40 Hz-160 kHz frequency response. They say dynamite comes in small packages, and this baby can definitely boom.