Active Three-Pair Receiver-Twisted Pair Format-A-XLR & stereo phono out-Stainless

The RDL DS-TPR3A is an active three-pair Format-A receiver that converts signals carried over twisted-pair cable into one balanced XLR output and two unbalanced RCA phono outputs. Pair A feeds the XLR connection, Pair B feeds the left phono output, and Pair C feeds the right phono output. The stainless model uses all three Format-A signal pairs and combines flexible powering with studio-quality precision active balanced circuitry.

Ideal Use Cases

This receiver is suited to RDL Format-A systems that need to recover three separately routed audio signals at one location. Its output arrangement supports applications requiring a balanced microphone- or line-level XLR feed alongside left and right -10 dBV unbalanced phono feeds. Because each output is assigned to a specific Format-A pair, the DS-TPR3A provides a clearly defined signal path without requiring pair reassignment at the receiver.

Why Choose This Model

The DS-TPR3A offers a balanced XLR output with a rear-panel switch for selecting -45 dBu microphone level or +4 dBu line level. Two additional RCA phono jacks provide -10 dBV unbalanced audio. This combination allows the module to serve equipment with different input-level and connection requirements while receiving all three signals through one Format-A input.

Power can arrive remotely through the twisted-pair cable or locally through a detachable terminal block. When local power is used, the fused power feed supplies connected modules. A blue power indicator provides immediate confirmation that the module is powered.

Installation and Integration

The DS-TPR3A uses an RJ45 connection for its RDL Format-A input. Its two listed power connections are the RJ45 interface and a detachable terminal block. Power requirements are 24 Vdc at 45 mA plus the requirements of any connected loads. Recommended power supplies, which are not included, are the PS-24AS for the USA and PS-24AX for international use.

The module measures 1.6 inches wide by 4.11 inches high by 1.89 inches deep, equivalent to 4.06 by 10.45 by 4.8 cm. The listed minimum mounting-box depth for D- and DS-series models is 2.4 inches. Its specified ambient operating range is 0 degrees C to 55 degrees C. These published dimensions, depth requirement, and power figures provide the core information needed when planning enclosure space and the local power budget.

Performance Highlights

The active audio circuitry provides a frequency response of 10 Hz to 50 kHz within plus or minus 0.1 dB. THD+N is specified below 0.005%, while noise is listed at less than -90 dB below +4 dBu. Headroom above +4 dBu exceeds 18 dB, and common-mode rejection exceeds 80 dB from 50 Hz to 150 Hz.

Published crosstalk performance is less than 90 dB at 1 kHz and less than 75 dB from 20 Hz to 20 kHz. The three outputs are specified as 150 ohms balanced and 100 ohms unbalanced. Together, these specifications define a receiver designed for wide-bandwidth audio transfer with low distortion, substantial headroom, and active balanced output performance.

What Makes It Different

The defining feature of the DS-TPR3A is its simultaneous use of all three Format-A pairs. Rather than duplicating one received signal across its connectors, it assigns Pair A to the balanced XLR output, Pair B to the left RCA output, and Pair C to the right RCA output. The selectable XLR level adds another layer of integration flexibility, allowing the balanced output to match either microphone-level or line-level equipment.

Remote powering reduces the need for a separate supply connection at the receiver, while the local terminal-block option supports installations that need power introduced at this module. The fused local feed and power-status indicator further distinguish its power-management arrangement.

Final Assessment

The RDL DS-TPR3A is a focused solution for receiving three Format-A audio pairs and presenting them as one switch-selectable balanced XLR output plus two -10 dBV RCA phono outputs. Its defined pair routing, remote and local powering options, compact dimensions, broad frequency response, and precision active balanced circuitry make it a technically complete endpoint for compatible three-pair RDL Format-A systems.