Unless a "conditioner" has a large battery bank, it cannot regulate the power any better than the power supply built into the component. All it can do is limit current.
Even then, cheap battery units will use a stepped sine wave approximation, which adds harmonics to the AC. Though, the power supply in the component will filter out those harmonics there may be a buzzing sound as it does so.
I concur, power conditioners are overpriced surge suppressors.
Interesting. I was told by an ISF certified calibrator that he sees TV power supplies fail all the time (in rural areas especially), because the hydro isn't as consistent (peaks and dips) the further away you are from the supply.
WOOOOOOOHOOOOOOOO! I'm the charlatan today!
