Radial Engineering IceCube IC-1 Balanced Line Isolator – Compact Passive Hum Eliminator and Ground Loop Isolation Interface for Clean Audio Signal Transmission

The Radial Engineering IceCube IC-1 Balanced Line Isolator is a compact passive audio isolation interface designed to eliminate hum, buzz, and ground loop noise in professional and semi-professional audio systems.

Built around a high-quality Eclipse transformer, the IC-1 provides single-channel balanced line isolation, allowing audio signals to pass through while breaking unwanted electrical connections between devices. This ensures clean, interference-free signal transmission when connecting equipment with different grounding schemes in studio, live sound, DJ, or broadcast setups.

The IceCube IC-1 is designed for line-level signal applications, making it ideal for use between audio interfaces, mixers, keyboards, playback devices, DI outputs, and PA systems. By isolating the signal path, it prevents ground loops that commonly cause low-frequency hum and electrical noise in interconnected systems.

As a fully passive device, the IC-1 requires no external power and maintains a transparent signal path with minimal coloration. Its compact, rugged enclosure makes it suitable for mobile rigs, stage use, and permanent installations where space efficiency and reliability are important.

Key Features:

• Single-channel passive line-level isolator
• High-quality Eclipse transformer for signal isolation
• Eliminates ground loops, hum, and electrical noise
• Designed for balanced audio systems in studio and live use
• Fully passive operation (no power required)
• Compact “IceCube” form factor for easy integration
• Maintains transparent, low-distortion audio signal path
• Ideal for FOH, recording, broadcast, and DJ systems