The Stillpoints are very effective. I use them under the aluminum shelf that my Galibier sits on. Probably a bit more effective than a sandbox and much easier to use. I've not used them anywhere else in my system so I can't say what else they may or may not benefit.
For my tube amp and the power supplies of my preamp and phonostage I prefer Series +2 rollerblocks to drain vibrations off of the transformers. These are another very effective vibration control product. The results I hear are increased micro-details and air around the instruments.
For my tube amp and the power supplies of my preamp and phonostage I prefer Series +2 rollerblocks to drain vibrations off of the transformers. These are another very effective vibration control product. The results I hear are increased micro-details and air around the instruments.