Consumer Input Jacks Stereo

The RDL D-CIJ3D is a consumer stereo input interface that converts unbalanced line-level audio to balanced stereo outputs without adding gain. It provides left and right RCA phono jacks with gold contacts alongside a 3.5 mm stereo mini-jack. Transformer isolation and hum cancellation are provided for unbalanced line inputs, while the line-level output is designed to feed equipment inputs rated at 10 kΩ. Output wiring is handled through a detachable terminal block.

Ideal Use Cases

The D-CIJ3D is suited to installations that need convenient connection points for consumer stereo sources using RCA plugs or a 3.5 mm stereo connector. It provides the specified unbalanced-to-balanced conversion needed to connect those sources to compatible balanced audio wiring and 10 kΩ equipment inputs.

Its combination of consumer input connectors, transformer isolation, hum cancellation, and a detachable output connector makes it appropriate for integrated audio systems where the source connection and downstream equipment use different signal formats. The RDL White/Gray finish identifies this D-CIJ3D version; the stainless-steel version is separately designated DS-CIJ3D.

Why Choose This Model

The D-CIJ3D brings its primary connection and signal-conversion functions into one compact unit. The provided connections and processing features include:

• Left and right RCA phono input jacks with gold contacts
• One 3.5 mm stereo mini-jack input
• Stereo input-to-stereo output operation
• Unbalanced-to-balanced conversion without gain
• Transformer isolation for unbalanced line inputs
• Hum cancellation on unbalanced line inputs
• Detachable terminal-block output connection

These features allow the unit to provide a defined interface between consumer stereo connectors and balanced downstream audio connections without introducing signal gain.

Installation and Integration

The unit measures 4.13 inches high, 1.7 inches wide, and 2.15 inches deep, equivalent to 10.49 by 4.32 by 5.47 centimeters. The specified minimum mounting-box dimensions are 1.80 inches wide by 1.75 inches deep, or 4.57 by 4.45 centimeters. These measurements should be checked against the intended mounting location before installation.

Audio sources connect through either the left and right RCA format or the stereo 3.5 mm mini-jack format provided on the unit. The balanced line-level output is connected through the detachable terminal block. Downstream equipment should present the specified 10 kΩ input. The supported ambient operating environment extends from 0°C to 55°C.

Performance Highlights

At line level, the D-CIJ3D has a specified frequency response of 50 Hz to 20 kHz within ±1 dB. The broader stated response is 30 Hz to 20 kHz within ±2 dB. Conversion from unbalanced to balanced operation is performed without gain, keeping the interface focused on signal-format conversion rather than level amplification.

Transformer isolation addresses the unbalanced line inputs, and hum cancellation is included for those inputs. Together, these documented functions support the unit’s role as an isolated connection interface between consumer audio sources and compatible balanced audio equipment.

What Makes It Different

The D-CIJ3D combines two common consumer stereo connection formats with balanced output connectivity. Users can access left and right gold-contact RCA jacks as well as a stereo 3.5 mm mini-jack, while installers receive a detachable terminal block for the output wiring. The unit also incorporates transformer isolation and hum cancellation rather than providing connector adaptation alone.

This model is supplied in the RDL White/Gray finish. Its D-CIJ3D designation distinguishes it from the DS-CIJ3D stainless-steel version referenced in the product data.

Final Assessment

The RDL D-CIJ3D is a focused stereo interface for installations requiring RCA and 3.5 mm consumer inputs, balanced line-level outputs, and transformer isolation. Its no-gain conversion, hum-cancellation function, response extending to 20 kHz, and detachable terminal-block output define a clear integration role. Compact dimensions and published mounting-box requirements provide the essential measurements needed to evaluate fit before installation.