"for acoustic reasons"
with a steel staircase, it would make sense to place magnetically anchored pads on it. For example, a sisal fabric wrapped around the edges, which is fixed from below with magnets. Magnets are now so strong that you can no longer remove them by hand. ... but "it's true" that many of my ideas are not "available for purchase." Something like that would have to be specially made by a craftsman and would certainly require a lot of additional development ideas and tests to be carried out.
:oops: I am just thinking out loud ....