Best Turntable Isolation Feet

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Isolation feet only work when the compliance of the material is matched to the weight sitting on it, and that is the calculation nobody does. A soft silicone pad rated for a light desktop speaker will compress solid under a 20 pound turntable, and once it has bottomed out it is a rigid spacer transmitting exactly what you were trying to block. Total your component mass, divide by the number of feet, and pick a material that visibly deflects a little under that load without flattening. That is what separates the small self-adhesive silicone buttons, which suit lightweight gear and thin shelves, from taller rubber pads at around an inch and a half and from spring-loaded aluminum feet, which decouple lowest because a spring has real travel. Height and mounting decide whether they fit at all. Self-adhesive feet around three quarters of an inch add clearance under a plinth without modification, threaded and spike-type feet need matching hardware, and any change in height has to keep the plinth level or you have introduced a tracking error on a tonearm. It is worth being clear that spikes are not isolation: a spike deliberately couples a component to the surface below to drain energy into it, which is the opposite goal, and it is the right choice for a speaker cabinet on carpet rather than for a turntable next to it. Four-packs suit a plinth, eight-packs cover a pair of speakers.