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Title: In Reference To Hum Complaint
Review: This unit only weighs 10 pounds shipping, and is very small physically. It is way too small and cheap for the supposed rating. I have an old power line conditioner which is little more than an isolation transformer, no AVR. It is rated 750 watts. But it weighs about 25 pounds and is at least half again as big as this Tripp Lite, and it does not make a sound. I run my whole work bench off it. This Tipp Lite is probably way over rated and under built. And that is why it hums. When it comes to transformers, yes, size DOES matter.
