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.


Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris