The 300-Watt NEKKST K10S Studio Subwoofer’s unparalleled, world-class performance is the result of a major collaboration between BEHRINGER audio engineers and loudspeaker master-designer/founder of KRK – 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. K10S’ front-firing port was designed for the ultimate in low-frequency extension – 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 10” 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