Generally both secure against voltage homeless people, spikes, droops, and brownouts, yet an AC Power Conditioner also offers extra insurance against Electrical Noise and higher-level protection against drifters and spikes. Much of the time an AC Power Conditioner (Power - Line Conditioner) is essentially a V Guard Stabilizer with the incorporation of a segregation transformer. As you would expect an AC Power Conditioner is ordinarily costly than a V Guard Stabilizer/Regulator.