After a quick Google search, this company makes what looks to be, some pretty nice stuff. I’d lean toward the pro-audio lines, over consumer.

I’m link posting challenged, but you can cut and past these. Link to their UPS http://www.furmansound.com/products/pro/ups/sb_1000.php

Link to a conditioner http://www.furmansound.com/products/pro/pwr_cond_seq/cond/pfpro.php

I have no idea what they cost, but suspect they aren’t cheap, but neither are new amps, DVD players and other electronic devises in a HT. This will at least give you an idea of what I’m talking about. They have numerous options. I did not see a combination conditioner / UPS. Looks like you’d have to buy both if you want the battery back up.

Regards……..mike