The most common approach is using isolation feet, spikes, or rubber pads under amplifiers, speakers, and turntables. Rubber and soft foam absorb high-frequency shaking, while metal spikes couple the equipment firmly to the floor and stop it from wobbling. Many audiophiles combine both, placing a spike on a small metal or wooden disc for stability.
Another effective method is a mass-loaded platform. A heavy slab of granite, marble, or dense MDF under a turntable or speaker reduces resonance because the extra mass is harder to set vibrating. Isolation racks with damping layers work on the same principle, keeping shelf equipment away from floor and footstep vibrations.
