Any thoughts? I was thinking to use the same under my turntable, it sits on 3 spikes as well, with small washer like metal rings underneath.
For under a turntable? Anything around that price I would go for Nobsound, they will be way better than those cork-rubber things. And for a lot less. Nobsound are about $30/set of 4, the cork is 4X the price and I bet not even as good. Get both and compare. Pods are in another world performance-wise, but also cost-wise, so try Nobsound first.
I used Nobsound under mine. Was using BDR before that and springs were a big improvement. So seriously doubt there are any cones or spikes you can put your turntable on that will be as good as a spring. At least until you get up into Townshend territory. Nobsound are on Amazon and the same thing is sold under different names, slightly different appearance, but the same springs. Have seen versions priced as low as $25/set of 4.