The new HDC-150 delivers advanced power filtration for high definition results with improved picture quality in both detail and color saturation. Enhanced audio response with tighter bass and more detail in the high frequencies make this the product of choice forall your customers’ AC filtration needs. Our patented Active Surge Processor™ (ASP) technology continuously monitors for over- and under-voltage conditions, shutting down the HDC-150 above 130 volts and below 85 volts, fully protecting connected components until the problem clears. When voltage returns to safe operating levels, the HDC-150 turns itself back on for continued protection.?