Dual Mic Phantom Adapter 12, 24, 48 V-XLR

The RDL FP-MPA2 is a two-channel phantom adapter built to supply phantom power to low-impedance balanced microphones while preserving mic signal loop-through. Each of its two inputs is paired with an output, and phantom voltage is selectable among 12 Vdc, 24 Vdc, and 48 Vdc. The unit combines those choices with XLR connectivity and an ultra-compact, all-metal RDL FLAT-PAK format.

Ideal Use Cases

This model fits microphone systems that need phantom power added for one or two balanced mic sources. Its three voltage selections accommodate equipment requiring 12 V, 24 V, or 48 V phantom power. At 24 V, the selectable buildout lets the installer use 1.2 kΩ NORMAL, identified as the standard setting, or 2.4 kΩ LO for low-current microphones. The two mic signal loop-through outputs support signal paths in which the microphone connection must continue beyond the adapter.

Why Choose This Model

Choosing the FP-MPA2 centers on flexibility within a compact enclosure. A single unit handles two microphone inputs and provides three documented phantom-voltage settings. Its 24 V current selection covers both listed buildout resistances, while the voltage and buildout implementation follows IEC 61938:2013. All-metal construction provides the specified enclosure design, and the compact dimensions make the unit suitable for installations with limited available space.

Installation and Integration

The FP-MPA2 accepts two low-impedance balanced mic inputs and provides two mic signal loop-through outputs using XLR connectivity. It requires a ground-referenced 24 Vdc power supply rated for 120 mA. The power supply is not included. RDL identifies the PS-24AS as the recommended supply for the USA and the PS-24AX for international use.

The chassis measures 1.42 inches high by 3.25 inches wide by 6.67 inches long, equivalent to 3.61 by 8.26 by 16.94 centimeters. Its specified ambient operating range is 0°C to 50°C. These requirements provide concrete power, space, connector, and temperature parameters for system integration. Listed technical resources include a PDF specification sheet, an engineering functional-block CAD file in American DXF, and a front-panel diagram in American DXF.

Performance Highlights

Phantom output can be selected for 12 Vdc, 24 Vdc, or 48 Vdc operation. For 24 V microphones, the 1.2 kΩ NORMAL buildout is the standard option, while the 2.4 kΩ LO buildout is provided for low-current operation. This selectable arrangement allows the same two-channel adapter to be configured around the microphone voltage and, at 24 V, its current requirement. The outputs are specified as microphone signal loop-through, keeping the unit focused on phantom-power insertion within the microphone path.

What Makes It Different

The defining combination of the FP-MPA2 is its two microphone channels, three selectable phantom voltages, and two 24 V buildout choices. These functions are integrated into RDL’s ultra-compact FLAT-PAK form with all-metal construction. The listed WEEE weight is 0.94 lb, while the shipping weight is 1.19 lb. The unit ships in a cardboard box with package dimensions of 4.375 by 7 by 2.25 inches.

Final Assessment

The FP-MPA2 is a focused solution for two balanced microphone lines requiring selectable phantom power. Its principal documented advantages are the 12 V, 24 V, and 48 V settings, selectable 24 V buildouts, dual mic loop-through paths, XLR connection type, compact metal chassis, and compliance with the IEC 61938:2013 voltage and buildout standard. A complete installation also requires an external 24 Vdc, 120 mA ground-referenced supply because one is not included.