Purchased a VPI SDS last week and was amazed at the improvement it made. This weekend I put Omicron magic dream footers under the SDS and was suprised by the improved impact and weight in the bass it also added a general ease to the sound and better focus. Wanted to put this out there so others might be able to benefit from my experience.
Had the same experence as a VPI dealer; I used some brass cones under mine; rubber feet seem to afffect bass impact more than you would think they would.
I'd love to hear some theory of why coupling or decoupling a SDS would result in any improved sound.
Vibration affects sound quality in my experience. many theories out there on this. Take your choice.
See the Star Sound Technologies site for their take on this.