Ferroresonant voltage regulators like the Sola one (aka constant voltage transformers) are a very bad idea for a home theater setup. They generate large amounts of harmonic distortion on the AC waveform they output and produce a strong electromagnetic field that can cause hum in any nearby components. Don't even think of using it.

What you need is a good power line filter with surge protection and the TrippLite "Isobar" are excellent ones that are used in industry, recording studios, and other critical situations. Since they don't have the marketing baggage of consumer units, they cost less and are of throughly professional quality.

Give that Sola thing to the nearest steel mill.