Of course anything that has moving parts: speakers, turntables, CD transports, R2R decks, tubes which unfortunately are subject to undesirable movements ( microphonics).
Many don’t agree w/ me but I’ve found over the years w/ several different systems that if the listening room has a very solid concrete slab floor or similar, it’s best to couple your equipment to it & let the mass of the floor / earth do the job. If it’s anything other than that , decoupling can be very effective & every component will benefit from doing so.
