Radial Engineering J-ISO Stereo Level Converter – 4 dB to -10 dB Line-Level Conversion Interface with Jensen Transformers

The Radial Engineering J-ISO Stereo Level Converter is a professional stereo line-level conversion interface designed to seamlessly match and isolate audio signals between professional and consumer audio equipment in studio, live sound, and broadcast environments.

Built around high-quality Jensen transformers, the J-ISO converts professional +4 dBu balanced line-level signals to -10 dBV unbalanced stereo signals, ensuring proper gain staging and compatibility between different audio standards. This makes it especially useful when connecting studio gear to consumer-grade devices such as DJ mixers, playback systems, recorders, or multimedia equipment.

The transformer-based design also provides complete electrical isolation between input and output, eliminating ground loops, hum, and unwanted noise that often occur when interfacing equipment with different grounding schemes. This ensures clean, stable audio transfer even in complex signal chains.

As a fully passive device, the J-ISO requires no external power and maintains a transparent, natural sound with minimal coloration. Its stereo design allows both left and right channels to be converted simultaneously while preserving phase accuracy and stereo imaging.

Key Features:

• Stereo +4 dBu balanced to -10 dBV unbalanced line-level converter
• High-quality Jensen transformers for premium signal integrity
• Provides complete galvanic isolation to eliminate ground loops
• Designed for studio, live sound, broadcast, and DJ systems
• Fully passive operation (no power required)
• Maintains accurate stereo imaging and low distortion
• Ideal for interfacing professional and consumer audio equipment
• Rugged construction for long-term reliability