Not the first time I've seen bricks used in an audiophile environment. I used to work in a mid - high end audio shop (we sold Krell, Conrad Johnson, Martin Logan, etc.), and one of the managers used to use bricks to isolate his speaker cables from vibrations in the floor. He would set up a line of bricks like dominoes between the amp and speakers, and route the cables through the holes in the bricks. He swore it made a huge difference.