@roxy54
@tyray
i have adequate feet underneath my individual components on my rack. The casters underneath the rack are invaluable to an ever-changing landscape where I live.
I have three listening rooms and another room entirely devoted to keep all the boxes I gotta maintain. I Shuffle things around a bit. Underneath one set of speakers I have rubber feet placed on top of square acoustical ceiling tiles that allow me to slide it around when I want to. This is a really cool thing to do.
My amp racks are customized with steel pieces welded together supported by casters. It weighs alot. Ideally it would be nice not to have the casters in a perfect world. But the negligible benefit of not having casters is not perceivable and I don’t care how good you’re hearing is. For your information, my subwoofer is not on casters but on some isoacoustic rubber creations that do have importance because of all the freaking vibrating this thing does.