The RDL D-CIJ3D is a passive stereo audio interface designed to connect unbalanced consumer audio sources to balanced or unbalanced stereo line-level inputs. It provides transformer-isolated signal conversion without requiring an external power supply, making it a practical solution for integrating computers, media players, and other consumer audio equipment into professional sound systems.
With RCA and 3.5 mm stereo inputs, the D-CIJ3D provides a convenient connection point for common consumer audio sources while helping reduce hum and ground-loop noise. Its compact design makes it suitable for both permanent installations and portable professional audio systems.
Stereo Unbalanced-to-Balanced Conversion
The D-CIJ3D accepts stereo audio from equipment with unbalanced outputs and converts the signal to balanced stereo line-level audio without adding gain.
This makes it useful when a consumer device needs to feed a professional amplifier, mixer, DSP, or other audio equipment that uses balanced inputs.
The module includes both gold-plated RCA phono connectors and a 3.5 mm stereo mini-jack, giving installers multiple ways to connect common audio sources.
Transformer Isolation for Hum Reduction
The D-CIJ3D uses transformer-isolated inputs to help reduce unwanted hum caused by ground-loop conditions between connected audio equipment.
This is especially useful when integrating consumer electronics into professional commercial audio systems, where differences in equipment grounding can introduce audible noise.
Passive Design Requires No Power
Because the D-CIJ3D is a passive audio interface, it does not require an external power supply. This simplifies installation and makes it easier to add the module to an existing audio system without having to provide another power connection.
The module provides stereo signal conversion while maintaining a compact form factor suitable for fixed installations or portable systems.
Professional Stereo Audio Performance
The D-CIJ3D provides a 50 Hz to 20 kHz frequency response with less than 0.2% THD. Crosstalk is rated at less than -80 dB at 1 kHz, providing clean stereo separation for professional audio applications.
The output is provided through a rear-panel detachable terminal block, allowing the module to connect directly to compatible installed audio equipment.
RDL D-CIJ3D Key Features
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Passive stereo audio interface
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Converts unbalanced stereo audio to balanced stereo
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Transformer-isolated inputs for hum rejection
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Gold-plated RCA stereo inputs
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3.5 mm stereo mini-jack input
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Balanced or unbalanced stereo line-level output
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Rear-panel detachable terminal block
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50 Hz–20 kHz frequency response
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Less than 0.2% THD
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Less than -80 dB crosstalk at 1 kHz
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Designed for equipment with 10 kΩ or higher input impedance
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No external power supply required
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Compact design for permanent or portable installations
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Available in D-CIJ3D and stainless-steel DS-CIJ3D versions
Applications
The RDL D-CIJ3D is useful whenever an unbalanced stereo source needs to be connected to professional audio equipment, including:
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Conference rooms
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Classrooms
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Commercial sound systems
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Retail stores
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Restaurants
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Professional AV systems
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Studios
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Background music systems
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Amplifiers and mixers
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Computer and media-player audio connections
Why Choose the RDL D-CIJ3D?
The D-CIJ3D provides a straightforward solution for connecting consumer stereo audio equipment to professional balanced audio systems. Its transformer isolation helps address hum and ground-loop problems, while its passive design eliminates the need for an additional power supply.
For installations where you need stereo input, stereo output, transformer isolation, and no external power, the D-CIJ3D provides those functions in a compact module.
Why Buy from Audio Supply?
Audio Supply can help you determine whether the RDL D-CIJ3D is the right interface for your installation and help you select compatible RDL modules, amplifiers, mixers, DSP equipment, and other professional audio components.
