This is an analog crossover, which has become quite rare these days. It supports stereo 2-way/3-way and mono 4-way configurations. It's a perfect match for JBL, also from the Harman group, and works well with other manufacturers' equipment. Recommended for audio enthusiasts and PA users who want to build a multi-amp system. Power has been confirmed, and basic operation has been verified. There were no particular problems. (Operation after the product arrives is not guaranteed) The front panel is very clean, and there are some scratches on the top panel, but they are not noticeable when placed in a rack. A 3P power cable will be included if desired.