Radial Engineering Pro-ISO Stereo Line Isolator – +4 dB to -10 dB Level Conversion Interface with Transformer Isolation for Hum-Free Professional Audio Integration

The Radial Engineering Pro-ISO Stereo Line Isolator is a professional transformer-isolated stereo level conversion interface designed to eliminate noise, match audio levels, and ensure clean integration between professional and consumer audio systems in studio, live sound, broadcast, and installation environments.

Built around high-quality transformer isolation circuitry, the Pro-ISO converts professional +4 dBu balanced line-level signals down to -10 dBV unbalanced stereo signals, making it ideal for connecting studio-grade equipment to consumer devices such as playback systems, recording devices, DJ gear, and media players. This ensures proper gain staging and prevents distortion caused by mismatched audio levels.

In addition to level conversion, the Pro-ISO provides complete galvanic isolation between input and output, effectively eliminating ground loops, hum, and electrical interference. This is especially important in complex setups where multiple devices share different power sources or grounding systems.

The unit is designed for stereo applications, allowing both left and right channels to be processed simultaneously while maintaining accurate stereo imaging and phase integrity. Its passive design ensures transparent signal transfer with minimal coloration or distortion.

Key Features:

• Stereo +4 dBu balanced to -10 dBV unbalanced level converter
• High-quality transformer isolation for hum and noise elimination
• Designed for professional-to-consumer audio integration
• Fully passive operation (no power required)
• Maintains accurate stereo imaging and low distortion
• Ideal for studio, live sound, broadcast, and DJ systems
• Prevents ground loops and signal interference
• Rugged build for professional reliability