i agree with remarks about DH Cones (from Golden Sound); I use the Super size cones in addition to Jumbo and Large sizes; extreme hardness of NASA ceramic material (next highest to diamond - hence DH (diamond hardness) - yields lightning-fast (mechanical) energy transfer.
Preamp Isolation Cones Without Going NUTS
What has been the experience of 'Gonners regarding the best EFFECTIVE vibrational/isolation, cone/footer combination product for use under tube preamps that doesn't cost a fourth the price of the components? Not platforms, but cones, points, tip toes, whatever. Say $100 or so TOPS for a SET.