Originally Posted by Loves2Watch
Sorry but that power filter absolutely cannot make the blacks of your TV any better. What you are seeing is the placebo effect. As for the speckles (commonly known as sparkles) , that is usually due to a low signal or line noise which the power filter could have cleaned.
My original post was only to highlight my (positive) customer service experiences because it differed from those listed. I'm neither a scientist nor an engineer, but can absolutely say that in an A/B test (with and without) changing nothing else in the system, from a layman's perspective - my picture is definitely sharper and the blacks are blacker - whatever the techincal explanation.
More importantly however, my gear has a measure of protection it once lacked from the funky power variances - lightning, power surges and power outages - that are so prevalent in FL, and were the genesis for my purchase.