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Sonifex

RB-LI2 Stereo Line Isolation Unit | Transformer-Based Hum Elimination Matrix

Sonifex Audio Processor
Professional broadcast product designed for reliable production, streaming, and modern media workflows.
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Key Features


Key Features

  • Eliminates Ground Loop Hum & Noise
  • Transformer-Balanced Audio Isolation
  • Dual Isolated & Loop-Through Outputs
  • Independent Left/Right Gain Adjustment
  • Compact 1U Rack-Mount Design
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Features & Specifications

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Product Overview +

Critical Signal Protection

The RB-LI2 is a professional solution designed to solve the common and persistent problem of earth hum loops in complex audio environments. By physically isolating the signal path through high-grade transformers, it completely eliminates ground current interference, a common issue when connecting equipment across different power mains or electrical phases in large studios or transmitter sites.

Engineered for Versatility

More than just an isolator, the RB-LI2 doubles as a distribution tool. With the addition of loop-through outputs, it allows you to derive multiple feed points from a single source without compromising the integrity of the original signal. This makes it an invaluable asset for facilities in the UAE, Africa, and Pakistan that need to extend signals reliably across a building or site without introducing noise or ground-related hum.

Professional Broadcast Standard

The RB-LI2 is built for the "always-on" requirements of broadcast infrastructure. Its transparent audio performance (10Hz to 36kHz ±0.5dB) ensures that your signal remains as pure as possible, while the adjustable gain control allows technical staff to match levels perfectly with downstream hardware. It is a essential, "set-and-forget" utility for any serious broadcast engineering rack.

Technical Specifications +
RB-LI2 Stereo Line Isolation Unit | Transformer-Based Hum Elimination Matrix technical specifications