The PRM1 Precision Reference Microphone is a special type of condenser microphone that provides an accurate reproduction of a room's sound characteristics for use with audio-analysis tools such as real-time analyzers (RTAs) and spectrographs.

Features:

¼-inch, pre-polarized electret-condenser capsule
Linear frequency response between 20 Hz and 20 kHz
Omnidirectional polar pattern
Low noise, low distortion
All-metal chassis
Comes with a clip, foam windscreen, and hard case
High-quality components and rugged construction
Suitable for system analysis and measurement
Especially recommended for use with PreSonus StudioLive mixers and VSL with Smaart® Measurement Technology

Specifications:

Type Black electret condenser
Element Pressure, FET preamplifier
Polar Pattern Omnidirectional

Connections
Polarity
Pin 2 output positive voltage (relative to Pin 3) when diaphragm receives positive pressure (moves inward)
Connector 3-pin XLR Male

Performance
Frequency Response 20 Hz to 20 kHz
Sensitivity (@ 1 kHz open-circuit voltage) -37 dB/Pa (14 mV/Pa) 1 Pa=94 dB SPL
Rated Impedance 200Ω
Minimum Load Impedance 1,000Ω
EIN (A-weighted) 26 dB
Max. SPL (1 kΩ load) 132 dB SPL (THD ≤ 1%, 1 kHz)
Dynamic Range (1 kΩ load) 106 dB
S/N Ratio 70 dB

Power
Phantom Power 9-52V
Current Consumption 2 mA

Physical
Length 7.56” (192 mm)
Width 0.83” (21 mm)
Weight 5.3 oz (150g)
Finish Metal, matte black
Environmental Conditions 10-50˚ C, humidity 0-95%

Presonus PRM-1 (PreSonus PRM 1)