Boston Audio Design Tuneblocks are award winners and the website says "TuneBlocks utilize the uniquely low acoustic impedance of carbon graphite to efficiently drain mechanical energy from audio components, while simultaneously isolating the component from the shelf or table supporting it. You'll notice reduced transient smearing and increased resolution through the reduction of the components' noise floor. TuneBlocks also improve localization of instruments and create a wider and deeper sound stage."\r\n\r\nReading up on the properties of graphite, and based on the company's claims, I thought I would try a DIY since I didn't have the funds for the retail version. \r\n\r\nIt was relatively easy to find a supplier of graphite rod in the dimensions I wanted - and they cut it to size - plus I easily found a supplier of various 1/2" ball bearings so I chose ceramic for hardness and colour contrast (white sitting on the dark grey graphite). I obtained twelve pieces of each for a total of about . One problem with graphite is that the dust can rub off (think of soft pencil lead) so I used my granite counter top sealer and wax before drilling a 1/2" depression to fit the ball. Three seem to work very well under my pre-amp and since they can easily accommodate heavy weight I may put them under my amp as well. I have Vibrapods/cones under my CD player but that may change also.