Hi
I went to a Nordost demo at my local Nordost Dealer in Calgary, Absolute Audio. It was extremely entertaining and impressive. While there I put my name in a draw to win 3 Brass and Ceramic Sort Kones, and I won the door prize.
So after a day or so sitting on my shelf (unused) I placed the 3 under my BDP2, really because it was really easy to do so. Two on the left side and one on the right side forming more or less a triangle. I based this configuration on trying to place one under a transformer which is on the front left of the unit.
Now the BDP2 is already sitting on the top shelf of a SolidTech Rack of Silence (Shades of "Get Smart"), and placed on top of this is a relatively modest but effective audio shelf supported by SolidTech anti-vibration devices (using rubber O rings to provide isolation, I prefer rubber rings to springs). On top of the BDP2 sits an HRS plate, also to control vibration. So I thought I had vibration under control. But the Kones don't handle external vibration but attempt to reduce internal resonance.
The addition of these 3 Sort Kones improved the music coming out of the BDP2 unbelievably. Depth increased, bass improved, more transparent background etc (you get the idea). It was one of the biggest improvements I've heard since initially putting the BDP2 in my system. It's not an exaggeration to say it sounded like another far more costly player and DAC.
So if you have the opportunity to demo these things under a BDP2, do it!! You wont regret it. Not sure how other cones might fair (like BDR cones for example), but the Sort Kones work great. In any event it seems that the BDP2 performance can be improved by proper resonance control - something to consider anyway.
Regards
Barry