PreSonus PRM1 Reference Measurement Microphone

With a ruler-flat frequency response from 20 Hz to 20 kHz, the PreSonus PRM1 delivers the accuracy you need for room analysis and speaker calibration. Its omnidirectional polar pattern captures sound uniformly from all directions, ensuring consistent measurements regardless of microphone orientation.

Overview

The PRM1 is a pre-polarized condenser microphone built specifically for measurement and analysis. It features a 6 mm capsule with a gold-plated XLR connector, and it operates on phantom power from +9 to +52 VDC. The microphone comes with a clip, foam windscreen, and a hard case for protection and portability.

What stands out

• Omnidirectional pattern for uniform off-axis response
• Wide dynamic range of 104 dB
• Low self-noise of 28 dB SPL (A-weighted)
• High max SPL of 132 dB for loud sources
• Includes hard case, clip, and windscreen

Technical details

• Microphone type: Condenser
• Polar pattern: Omnidirectional
• Frequency response: 20 Hz - 20 kHz
• Sensitivity: -37 dBV/Pa (14 mV/Pa)
• Impedance: 200 Ohms
• Max SPL: 132 dB SPL
• Equivalent noise level: 28 dB SPL (A-weighted)
• Connector: 3-pin XLR (gold-plated)
• Phantom power: +9 to +52 VDC
• Diaphragm size: 6 mm
• Housing material: Metal chassis
• Power consumption: 3.5 mA
• Included accessories: Microphone clip, foam windscreen, hard case

Our verdict

The PRM1 is a reliable tool for audio professionals who need precise, repeatable measurements. Its robust build and comprehensive accessory set make it a practical choice for both field and studio use.