At Audible Spectrum, we're budget-minded audio nuts on a quest to seek out and offer reasonably priced alternatives to expensive audiophile products.
These audiophile rubber and cork pads, Isolation Blocks, or Isoblocks are great for audio gear vibration reduction, or for reducing vibration under almost any device. I even use them under my external hard drives.
Use them under turntables, amplifiers, CD players, speakers, etc. They can be placed right under the footers, or in combination with a maple block and brass footers. These measure 2" X 2" X 7/8" and are identical to much more expensive audiophile alternatives.