KRK 12sHO 400 Watts 12-Inch Powered Studio Subwoofer Curved Baffle Curved front plate design virtually eliminates diffraction distortion Front-firing port provides low frequency extension while reducing boundary coupling and the unique shape is optimized to avoid port turbulence 400 watts RMS power for super clean and loud low frequency response Bypass footswitch control allows you to defeat the sub and provide full range audio to your recording monitors for use with a standard latching 1/4 inch mono footswitch Kevlar 12-Inch Driver - High Excursion woven Kevlar driver cone