KEF LS50 Mini Monitor - High Gloss Piano Black (Pair) The LS50 radiates an extremely large listening sweet spot and delivers a remarkably fast, clean, and expansive sound with its Uni-Q driver array. The construction of the LS50's cabinets plays a big part in their sound. From baffle shaping and port design, the LS50 reproduces your audio completely flat and unaltered. The LS50 comes in four spectacular colors, each with its own corresponding Uni-Q driver array color and frequency response is 79Hz - 28kHz (3dB) The LS50 is one of the most award-winning speaker products ever released by KEF, receiving accolades from such publications as Stereophile, What Hi-Fi, and The Absolute Sound. Frequency range (-6dB)-47Hz - 45kHz. Crossover frequency-2.2kHz. Maximum output-106dB