XXX Mint no box light use..Sitting around for 5 yrs after my Happy Divorce Description The KEF Q15 Speaker Set was manufactured by KEF between the years 1997 and 2000. This KEF stereo speaker set has a peak power output of 100 watts (50 watts x 2). This KEF bookshelf speaker set uses the company’s proprietary and renowned Uni-Q technology (in the form of the low-profile 165_19 format Uni-Q array) for superior audio performance and accurate sound reproduction. This KEF stereo speaker set has a nominal impedance rating of 6 ohms. The KEF Q15 Speaker Set has a signal-to-noise ratio of 91 dB and a frequency response ranging from 50 Hz to 20 kHz.