Description
The Earthworks M23 is engineered for engineers who need trustworthy numbers, not just good-sounding audio. As a member of Earthworks’ M Series, it delivers accurate time-domain and frequency response performance, with the stability to hold up across shifting temperatures and atmospheric conditions. Its fast impulse response and low handling noise make it a dependable tool wherever precise, free-field measurement matters.
- Flat frequency response to 23kHz
- Omnidirectional polar pattern with exceptional consistency
- An improved successor to EAW’s SMAARTMIC
- Compatible with SMAART, MLSSA, Spectrafoo, TEF, RTA, and measurement platforms from dbx, DEQX, and others
- Meets or exceeds ANSI Type 1 and applicable IEC 61094 standards
- Requires 48V phantom power
Suited to acoustical measurement, sound system setup and troubleshooting, and room acoustics work, the M23 is a cost-effective entry point into serious measurement microphones without sacrificing accuracy. Each unit ships with its own individually measured calibration chart documenting open-circuit sensitivity and frequency response curve; an electronic calibration file is also available. Earthworks recommends re-calibration every five years to keep readings dependable over the long haul.
Key Specifications
- Frequency Response: 9Hz–23kHz ±1/-3dB
- Polar Pattern: Omnidirectional
- Sensitivity: 30mV/Pa (-30.5dBV/Pa)
- Power: 48V Phantom, 10mA
- Max SPL: 142dB
- Output: XLR, 100Ω balanced
- Noise: 22dB SPL equivalent (A weighted)
- Dimensions: 165mm x 22mm (6.5 x 0.86 in)
- Weight: 0.35 lb (160g)
- Operating Temp: -10°C to +40°C









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