Earthworks
Earthworks M23 Measurement Mic
Best precision tool for professional audio system calibration and room analysis.
This precision-engineered measurement microphone is designed for accurate room analysis and sound system calibration. It offers a flat frequency response from 3Hz to 23kHz and can handle up to 140dB SPL without distortion, ensuring reliable performance in various environments. This omnidirectional microphone provides excellent polar accuracy, making it suitable for use with popular audio measurement software. It requires standard 24-48V phantom power for operation and is built to meet or exceed Type 1 IEC 61094 requirements, delivering consistent results for acoustical measurements and sound system setup.
$499.00
Owner Satisfaction
4.5
/ 5
Category Rank
1564
/ 3367
#1564 in Microphones
Price vs Category Average
-2%
Below average
Dimensions (L x D)
165226.50.860
/ mm x mm ( x inches)
Who it's for
- Acousticians requiring absolute precision for room analysis
- Engineers capturing pristine, uncolored acoustic data
- Touring professionals needing reliable gear for field work
Who should skip it
- Hobbyists working with a limited equipment budget
- Musicians seeking microphones with character and warmth
- Users needing a low-maintenance mic for casual environments
Performance breakdown
Frequency Accuracy
Flat response from 3Hz to 23kHz ensures precise room analysis data.
SPL Handling
Capable of capturing 140dB without distortion in high-pressure environments.
Polar Consistency
Omnidirectional pattern maintains reliable measurements regardless of sound source angle.
Environmental Stability
Resistant to temperature and atmospheric shifts for consistent field performance.
Build Quality
Precision-engineered construction meets rigorous Type 1 industry standards.
Software Compatibility
Seamless integration with industry-standard FFT-based audio measurement platforms.
Key Specs
Dimensions (L x D)
165mm x 22mm (6.5 x 0.860 inches)
Weight
0.36 lb. (160g)
Frequency Response
3Hz - 23kHz
Polar Pattern
Omnidirectional
Sensitivity
34mV/Pa (-29dBV/Pa)
Max Acoustic Input
140dB SPL
Output Impedance
65Ω balanced
Power Requirements
24-48V Phantom, 10mA
Know before you buy
The M23 is designed to work with all standard FFT-based real-time audio measurement software, including SMAART, MLSSA, Spectrafoo, TEF, and RTA applications.
Yes, this microphone requires standard 24-48V phantom power to operate. It is compatible with most professional audio interfaces and mixers that provide this voltage.
The M23 is built to be immune to most temperature and atmospheric fluctuations. It is rated for reliable operation in environments ranging from -4˚F to 140˚F.
Yes, every M23 is individually hand-tuned and tested. Each unit ships with its own printed frequency response chart so you can see the exact performance of your specific microphone.
Absolutely. The M23 is engineered to handle up to 140dB SPL, making it capable of capturing very loud sound sources without introducing distortion into your measurements.
Yes, the Earthworks M23 is built to meet or exceed Type 1 IEC 61094 requirements, ensuring it provides the precision necessary for professional sound system calibration.
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