Feature●THX-certified, three-piece computer audio system●Exclusive Klipsch MicroTractrix Horn maximizes digital technologies such as CDs, MP3 downloads, and streaming radio programs●200-watt digital hybrid amplifier driven ProMedia 21 incorporates a convenient headphone jack as well as a miniplug input●Compatible with laptop, smartphone, tablet and other devices via a headphone Jack and mini plug input●31 Hz to 20 kHz frequency response rangeDescription 31 Hz to 20 kHz frequency response range