I've been using a combination of Vibracones and Vibrapods under most of my equipment now for a few years, and have been very satisfied with the sonic improvements. The Vibrapods continue to receive accolades every year in the "recommended components" issues of Stereophile and The Absolute Sound, and for $6 apiece, they're an out and out steal.

Unfortunately, they're unsuitable for my power amp (an Adcom GFA-5800) which weighs 65 pounds. The pods collapse completely, and the stainless steel ball of the cones collapse into the rest of the Vibracones, rendering them useless as well. There are plenty of preposterously priced acoustic isolators available (many for far more than I paid for the amplifier!), but Pangea, whose power cords are outstanding, and relatively inexpensive, makes "Mega Feet" for heavy equipment, and I just received a set for Father's Day.

Do they work? Yes they do, and much the same as did the Vibrapods and Vibracones when they could be utilized. Everything sounds just a little bit better: smoother highs; better imaging and depth; a mellower, "throatier" sound to horns and woodwinds: and better defined bass. All of these improvements are subtle, but audible, and for $49.95 for a set, I can't think of a better bargain in the world of tweaks.

Now, I'm going to try out one of the lesser Pangea feet for lighter equipment (at only $24 for a set of four) to see if they best the Vibracone/ Vibrapod combos. We'll see...