Network to Mic/Line Interface with VCA-Dante Input-2 Balanced Mic/Line Outputs

Ideal Use Cases

The RDL FP-NML2V is designed to connect standard audio amplifiers to a Dante network. It converts two Dante network audio signals into two individually adjustable analog outputs, making it well suited to systems that must feed two separate amplifiers. Each output is switch-selectable for mic or line level, while the balanced connections are provided on a detachable terminal block.

A separate voltage-controlled amplifier is provided for each output. This allows the two destination levels to be managed independently through RDL or OEM remote controls, a 0 to 10 Vdc control signal, or a 0 to 10 kΩ linear control. The interface is particularly useful when an existing analog amplification system needs to receive network audio without giving up independent output-level adjustment.

Why Choose This Model

The FP-NML2V combines two-channel Dante conversion with professional analog output levels and dedicated VCA control. Its network connection supports 100 Mbps transmission through an RJ45 connector with Link and Speed indicators. Supported sample rates are 44.1 kHz and 48 kHz, with 48 kHz identified as the default, while conversion is performed at a 24-bit depth.

At maximum VCA level, the line outputs provide a nominal +4 dBu signal. The specified digital-to-analog operating relationship is 18 dBFS equals +4 dBu. Because each channel can be configured and adjusted separately, one compact interface can serve two amplifiers or two analog inputs that require different levels.

Installation and Integration

The FP-NML2V is equipped for either rack mounting or surface mounting. Its enclosure measures 4.85 inches wide, 1.75 inches high, and 3.25 inches deep. Network audio connects through the RJ45 port, and the two balanced analog outputs connect through a detachable terminal block. Ethernet Link, Ethernet Speed, and SYNC indicators provide visible operating information.

Each VCA accepts either 0 to 10 Vdc or a 0 to 10 kΩ linear control. The FP-NML2V requires 24 Vdc at 135 mA and includes both a power jack and a 24 Vdc pass-through connection. The pass-through jack permits power-supply sharing with RDL amplifiers. Listed recommended supplies are the PS-24AS for the USA and the PS-24AX for international use.

Performance Highlights

The specified frequency response is 20 Hz to 20 kHz within ±0.5 dB, with THD+N below 0.1%. Noise below a +4 dBu reference is specified at less than -80 dB while an output is active and less than -95 dB while outputs are muted. Output amplifiers provide more than 18 dB of headroom above +4 dBu.

Output impedance is 150 Ω balanced or 75 Ω unbalanced. Listed crosstalk performance is less than 90 dB at 1 kHz and less than 80 dB from 20 Hz to 20 kHz; the product information also describes crosstalk as below the noise floor. RDL analog filtering complements the 24-bit conversion, and the outputs automatically mute whenever the digital audio inputs are inactive.

What Makes It Different

The defining feature of the FP-NML2V is the combination of two Dante-to-analog output paths with a separate VCA for each path. VCA attenuation spans 0 to greater than 90 dB with an audio taper. Individual mic or line selection further distinguishes the channels, allowing the interface to address two different downstream input requirements from the same network connection.

This FP-NML2V model uses 24 Vdc power and provides the 24 Vdc pass-through connection for sharing power with compatible RDL amplifiers. PoE Class 0 operation under IEEE 802.3af, along with normal or hot-standby operation, is listed for the separate FP-NML2VP variant.

Final Assessment

The RDL FP-NML2V is a focused solution for converting two Dante network signals into independently controlled, balanced mic- or line-level outputs. Its 24-bit conversion, selectable output levels, +4 dBu nominal line output, wide VCA attenuation range, automatic muting, and greater than 18 dB headroom address the core requirements of professional Dante-to-amplifier integration.

For systems operating from 24 Vdc that need two analog destinations with separate remote level control, the FP-NML2V provides the required conversion and control in a compact rack- or surface-mountable enclosure. Its specified ambient operating range is 0° C to 40° C.