I am considering buying the APC H15 from Audioholics, but this whole filtering aspect has peeked my curiosity.
I have used APC UPS's at work for years, and have had good experience's with those, so I would assume their other products will be decent.
I currently use a Monster Power bar Mod# 1100 and have not had any problems with it in the 4 years that I have owned it. I can't say whether the unit's filtering makes a difference, but now I'm curious and will try to test that when I get a chance. I'll also look for a UL sticker.
I checked the UL website and Monster has 38 entries. It looks like some of the entries are for power cords and other types of cabling, but there are quite a few of their "power" products that have been tested - see list below.
Whether they have a certified sticker on them, I can't say.
(Relocatable power taps/Transient voltage surge suppressors, Models AV700, AV800, HT700, HT800, HT850, HTFS500, HTFS1000, HTS700, HTS800, HTS850, IPS600, PC800, PC800HP, PC900, HTS1600. Models HTS400, HTS400FS.
Relocatable power taps/Transient voltage surge suppressors/EMI filters, Models AV600, MPB1100, MPB2100, PC100, PC100TL, PC600, PRO1000, PRO2000, HTS950-3780J, HTS950-7020J.
Relocatable Power Taps, Models OTG400, OTG600.
+Relocatable power taps/Transient voltage surge suppressors, Models HTS1000MKIII-6624J, HTS1000MKIII-8244J. Model HT400.)
Regards,
Karl