This is definitely one of the more expensive pads, however I have noticed a difference in quality and size compared to some other products. I also liked the rubber lining under the metal. They are packaged very nicely, as expected for the price. I am happy with this product and they work as described. As for the sound difference, it's really hard to tell. I keep my speakers on the tile and they move when you push them and scratch the tile. Now they lie down.
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