I agree with Swampwalker. The Salamander racks are utilitarian, and they look fairly good, but from a audiophile vibration control perspective, they offer very little benefit.
I own a Salamander Synergy cabinet, and I tweaked it with a couple of custom sized Neuance shelves, and I put 1/8" sorbothane between all the shelves and shelf supports.
These two tweaks go a long way to minimizing vibration. However, the Neuance shelves are no longer made.
Perhaps replacing the stock shelves with maple shelves would help, but it'd break your budget.
Another really inexpensive tweak I use under my preamp and power supply are Sanford ArtGum erasers. About $2.50 for three.
I own a Salamander Synergy cabinet, and I tweaked it with a couple of custom sized Neuance shelves, and I put 1/8" sorbothane between all the shelves and shelf supports.
These two tweaks go a long way to minimizing vibration. However, the Neuance shelves are no longer made.
Perhaps replacing the stock shelves with maple shelves would help, but it'd break your budget.
Another really inexpensive tweak I use under my preamp and power supply are Sanford ArtGum erasers. About $2.50 for three.

