Talking vibration control, under the devices,i use the following combination from bottow to top:
Golden Sound ceramic cones + Dh Square
Carbon kevlar plate (vibration's sponge)
Fadel amethyst steel/teflon system
And it's important to respect the horizontality (in the two dimensions) on turning machines and speakers
Under my tube amp i use a steel triangle on Lowan counter cones
The feet of my furniture (and speakers stands) are filled with sand and have some Golden sound ceramic cones & DH square
under the furniture's feet.
Oh well and i put some tar sheets into my devices when possible (add weight and calm down vibes), so under my drive, converter and the passive preamp.
And 140lb of rocks on the subwoofer
The combination quoted above
(Golden Sound ceramic cones + Dh Square
Carbon kevlar plate (vibration's sponge)
Fadel amethyst steel/teflon system)
works extremely well but is beaten by the Relaxa plate, magnetic levitation system:

