Found these with no price tags in a closet. It was readily clear that they were anti-vibration platters, but there was no other information and no other stereo equipment (except for a pair of AKG K280 Parabolic headphones that I also purchased). But, man...what this man must have had? I guess the family snagged the gear or sold it off previously. Of course I bought the shelves. Anyone have any knowledge about these? From quick research, they look like the Svelte Plus series. As always, thanks.