Bi-Directional Mic/Line Dante Interface 2 x 2 w/PoE-2 XLR In, 2 Out on Rear-Panel Terminal Block-Black

The RDL DDB-BN2M is a black, bidirectional 2 x 2 Dante network interface designed to connect two conventional microphone or line-level sources with two Dante audio channels. Two front-panel female XLR inputs feed high-resolution 24-bit analog-to-digital conversion, while two Dante signals are converted back to analog through balanced or unbalanced outputs on a rear-panel detachable terminal block. The interface operates over a 100 Mbps Ethernet connection and receives power through PoE Class 0.

Ideal Use Cases

This model is suited to installed audio systems that need two microphone or line inputs at an accessible wall location while keeping output wiring concealed at the rear. Each input can be configured independently for microphone or line operation, making the interface useful where source types vary. Switch-selectable P48 phantom power supports compatible microphones, while selectable output levels allow connection to balanced +4 dBu or unbalanced -10 dBV equipment.

Why Choose This Model

The DDB-BN2M combines Dante input and output conversion in one compact wall-mount module. It converts two analog sources into Dante network channels and simultaneously converts two Dante channels to line-level analog outputs. Module setup does not require special software. Three hardware selectors per input provide phantom-power, Mic/Line, and gain control. Microphone gain settings are 40, 48, or 62 dB, while the technical specifications list line gain settings of unity, 8, or 19 dB.

Its 24-bit conversion, 20 Hz to 20 kHz frequency response, low-noise performance, and RDL analog filtering are intended for studio-quality signal handling. The two output channels also provide 20 dB of headroom above their nominal +4 dBu or -10 dBV operating levels.

Installation and Integration

The unit connects to a Dante network through an RJ45 port with Ethernet Link and Speed indicators. Supported sample rates are 44.1 kHz and 48 kHz, with 48 kHz identified as the default. Power is supplied through IEEE 802.3af PoE Class 0, allowing network audio and power to use the Ethernet connection.

For installation, the module can be wall-mounted in a North American dual electrical box, with a four-square deep box recommended, or installed in an RDL WB-2U international wall box. The specified mounting elevation is no more than 2 meters. The enclosure measures 3.52 inches wide, 4.11 inches high, and 2.09 inches deep. Front-panel Sync and Power indicators provide operating status, while the rear panel carries the network indicators and detachable output terminal block.

Performance Highlights

• Two female XLR inputs with independent microphone or line selection
• Two balanced outputs on a detachable rear terminal block
• Switch-selectable P48 48 Vdc phantom power compliant with IEC 61938:2013
• Balanced +4 dBu or unbalanced -10 dBV nominal output selection
• Maximum output of +24 dBu balanced or +10 dBV unbalanced
• 20 Hz to 20 kHz frequency response within ±0.5 dB
• Typical THD+N of 0.015% at 1 kHz for the input conversion path
• Output THD below 0.01% at 1 kHz
• CMRR greater than 65 dB from 50 Hz to 120 Hz
• Crosstalk specified below the noise floor at operating level

What Makes It Different

Unlike a one-way input or output endpoint, the DDB-BN2M handles both directions of conversion in a single module. Its connection layout places the two XLR inputs on the front for direct source access and the two analog outputs on a rear terminal block for installed wiring. Physical switches provide immediate control of input type, gain, phantom power, and output operating level without requiring special module-setup software.

Final Assessment

The RDL DDB-BN2M provides a focused solution for adding two analog inputs and two analog outputs to a Dante system. Its combination of configurable mic/line inputs, P48 phantom power, selectable professional or consumer output levels, 24-bit conversion, PoE operation, and electrical-box mounting makes it a practical interface for permanent network-audio installations requiring accessible XLR inputs and concealed rear-panel output connections.