Weights on top of equipment to dampen vibration


I'm looking into trying some of these. Are there weights specifically made to be placed on top of audio equipments, other than Mapleshade and Finite Elemente?
chenc
I use an HRS damping plate (for CD player) and a Bright Star Audio Little Rock (a large one to cover 2 NuForce amps). Excellent products.
Yoby
Do you think the Bright Star rock would work well on my tube amps. I would be placing these on my transformers to reduce vibration
Sea Pearls soft diving weights, I use the black five pounders on top of each NuForce amp.