Sand bags under/over For Isolating ?

Anyone ever experiment with the use of sand bags underneath or over for tweaking audio components?
Yes. They sound awful in my opinion.
Me too! Couldn't remove them fast enough!
Sand?--an anathema, for what you're considering. Belongs on the beach. peace, warren
It works good if your floor mounted on wood joists that make it pretty unstable especially when you play turntable and someone walks by or runs by.
I managed to get away with it placing my rack right onto the corner where my system is less affected by such.