ST-MPA24

RDL ST-MPA24 - Dual Microphone Phantom Adapter - 24 V Adjustable

The RDL ST-MPA24 is a dual-channel phantom power adapter designed to supply condenser microphones in AV, sound reinforcement, and studio installations. It converts standard mic inputs into phantom-powered inputs, delivering 24 V phantom power compliant with IEC 61938:2013. Each of the two independent circuits includes a mic input and a mic output, with phantom voltage applied only to the input, ensuring safe integration with existing mic preamps.

The module operates from a 24 V DC ground-referenced power supply and features an internal regulator and filter circuit. A multi-turn trimmer allows precise adjustment of the phantom voltage up to 92% of the supply voltage. In its default setting, the unit provides standard 24 V phantom power (P24).

Functionality

• Converts standard mic inputs to phantom-powered inputs
• Two independent phantom power circuits in one module
• Adjustable phantom voltage up to 24 V DC (IEC 61938 compliant)
• Highly filtered power for clean phantom supply
• No voltage present on mic output terminals
• Use one or both channels as needed

Features

• Device type: dual microphone phantom power adapter
• Inputs/outputs: 2x mic input, 2x mic output (independent per channel)
• Phantom voltage: adjustable up to 24 V DC (P24 standard)
• Voltage adjustment: multi-turn trimmer
• Power supply: 24 V DC (ground-referenced)
• Operating current: dependent on load (up to 92% of supply voltage)
• Operating temperature: 0°C to 55°C

RDL ST-MPA24 is a compact and effective solution for AV integrators needing to add phantom power to existing mic inputs without altering the signal path. With adjustable voltage and high-quality filtering, it ensures stable and safe operation for condenser microphones in demanding environments.