I bought one of those same units for a similar price at a closing Ultimate Electronics store about three months ago. Honestly, I do not see or hear any difference/improvement in my system. Previously I was using a very cheap no-name power strip with no protection at all built in. At least now I have surge protection and hopefully noise filtering, but I would probably make a different purchase if faced with that decision today. I am not trying to dissuade you nor preach about Monster being the "Evil Empire" just giving you my point of view.