Active Crossover-2 way stereo. Continuos adjustable crossover frequencies. Quality filter types: 18Db/oct Butterworth. This makes it easy to obtain a phase & time coherent in Near Field situations. Wide, flat Frequency response from 10Hz to 75Hz. Ultra-low THD<0.004%. Excellent instantaneous response and dynamic range. Ensures the elimination of shock may be caused when 10 is on /off Best transient response guaranteed by a 117 dB Dynamic Range What’s worth mentioning is the function of Mono-Channelized for LF. This creates a stronger punch. 110V/220V Jumper.