Originally Posted by Bob Hodas
This is not my department and in fact belongs in another forum but Monster Cable also makes some inexpensive boxes that work fairly well. I own one myself.
I've actually got a Monster Power product, kinda old now, but I'm not convinced it's anything more than a glorified surge protector with neat LEDs on the front and a cool, though inaccurate, analog meter displaying the line voltage. It most certainly does not
re-build the sine wave or provide any level of back-up power to protect from frequent power outages that I endure here. It's fine for my Costco-purchased Technics receiver/amp and Panasonic TV, Sony VCR, Sony DVD player, and Satellite receiver. But it wouldn't be welcome anywhere near a rack of Sunfire components or behind Mackie or Sunfire speakers. I think whatever I decide I'll have a small rack of batteries, enough to provide some hours of quiet entertainment, behind an array of inverters. So much space consumed, though...