The 300-Watt NEKKST K10S Studio SubwooferÕs unparalleled, world-class performance is the result of a major collaboration between BEHRINGER audio engineers and loudspeaker master-designer/founder of KRK Ð Keith R. Klawitter. This incredible audiophile-grade subwoofer is ideal for all critical listening environments thanks to the custom-engineered bridge-mode amplifier that drives the 10" glass-fiber woofer for rich, deep and tight bass. K10SÕ front-firing port was designed for the ultimate in low-frequency extension Ð without the typical boundary coupling and port turbulence found in competing systems. ¥ Ultra-linear 300-Watt reference-class studio subwoofer ¥ Designed by renowned acoustic icon Keith Klawitter, founder of KRK* ¥ Powerful bridge-mode amplifier provides detailed reproduction of full low frequency spectrum ¥ High excursion 10Ó woofer with deformation-resistant glass fiber cone ¥ Variable low-pass filter and phase switch for optimum crossover alignment with stereo monitor systems ¥ Stereo inputs for mono-summed sub-bass creation ¥ Direct link outputs for connecting to stereo monitors for 2.1 speaker systems ¥ Servo-balanced inputs with balanced XLR and unbalanced TS jack and RCA connectors ¥ High-density composite enclosure for ultra-low diffraction and reduced low-frequency distortion ¥ ''Planet Earth'' power supply for maximum flexibility (100 - 240 V~), noise-free audio, superior transient response plus low power consumption ¥ Designed and engineered in Germany