While it may or may not help audio or video quality, it does act as a surge protector. That should be the first use. I also have line conditioners for two systems - Belkin and Monster. I did not notice any improvement in sound/video quality but there have been some major improvements in house wiring (4 year old house). Given that we spend a fair amount of money on our hobby, I would hate to have the components destroyed because of a surge. But then again, I could have been taken by all the marketing. They do look cool though.