One way to optimize the isolation is to place one Machina Dynamica VibraBlock Damper on each horizontal shelf. This is a fine constrained layer damper which does not overdamp as it magnifies or refines the benefits of isolation to a shelf which is part of an already well constructed or weighty structure, also to speaker stands.
A second way is the placement of a number of inexpensive cryogenically treated mini isolator springs (Cryo Baby Promethean isolators from the same vendor) between the base of any component and the shelf it rests upon.
I have used these two ideas with an audiophile solid equipment rack as well as on shelves of conventional wood furniture. In both applications the beneficial results were clearly audible and very economical to implement.
A second way is the placement of a number of inexpensive cryogenically treated mini isolator springs (Cryo Baby Promethean isolators from the same vendor) between the base of any component and the shelf it rests upon.
I have used these two ideas with an audiophile solid equipment rack as well as on shelves of conventional wood furniture. In both applications the beneficial results were clearly audible and very economical to implement.