Simple Explanation

A device that blocks unwanted vibrations or electrical noise from passing between connected equipment.

Concise Technical Definition

A component designed to prevent the transmission of mechanical vibrations or electrical interference between two systems or devices.

Layman-Friendly Analogy

Like using foam padding under a washing machine to stop it from shaking the floor—or using a surge protector to keep bad signals from spreading.

Industry Usage Summary

Used in speaker setups, turntables, and racks to prevent vibrations, and in audio lines (e.g., isolation transformers) to break electrical ground paths and avoid hum.

Engineering Shortcut

Blocks vibration (mechanical) or ground loops (electrical).

Full Technical Explanation

An isolator, also known as a decoupler, is a device that blocks or reduces the transfer of energy—either mechanical or electrical—between components. In mechanical applications, isolators are typically made from rubber, foam, or silicone and are used under speakers, subwoofers, or turntables to reduce transmission of vibrations to floors, racks, or surfaces. This helps minimize resonance and improves clarity. In electrical systems, audio isolation transformers act as isolators by providing galvanic isolation—breaking the direct electrical connection between devices to eliminate ground loops and hum. Both types of isolators are essential tools in professional and home audio setups for preserving signal purity and reducing unwanted interference.