The flykantech GLI-3XLM is a Passive Ground Loop Noise Isolator designed to eliminate hum, buzz, and audio interference in professional sound systems. It features three input options (XLR/6.35mm, 3.5mm TRS) and a single XLR (Male) output for seamless integration. The Ground Loop Noise "LIFT" Switch reduces mains hum, ensuring clear audio. With one-way signal flow, it operates passively without external power, and its durable metal housing makes it ideal for professional environments.