Mass and vibration cancelling on top of CD player?

Why does it make a difference and what should be expected?

For my Oppo BDP-83 SE which I felt vibrated too much when playing I took some extra sound damping material from a PC build put that and a 5 lb weight on top of the Oppo. I also put some computer hand rest wristpads on the feet of the Oppo. It stopped a lot of the vibrations but for sonic performance improvement I'm not really sure because I implemented a lot of tweaks at one time.

I use 5 VPI bricks on my transport and 2 on my DAC.

"10-28-13: Ptss
Why does it make a difference and what should be expected?"

If I knew that, I'd make my own like of super expensive products, and you guys would have yet one more mystery brand that everyone complains about.

My best guess is that the combo of cones and the book dampens the CD player from vibration. Keep in mind, though, I said mass market. It worked on a cheap Pioneer Elite universal player that weighed about 2 lbs. The same tweek has no effect on my Wadia. It already comes with cones from the factory and weighes a little over 50 lbs. Its one of those things that youy just have to try. Its not expensive and you may get lucky and get something out of it.

I also use VPI bricks. One on the transport and one one the DAC. I am not sure about it's effect on the transport which is well built and heavy, but I am pretty sure that it quells vibrations in the thinner casework of the DAC.