Earthworks M23 G2 High Definition Measurement Microphone

Earthworks M23 G2 - Precision on a Budget

Precision Reference for Acoustical Measurement and System Calibration

The Earthworks M23 G2 is the professional reference standard for acoustical measurement, trusted by engineers and system designers since 1995. With an extended frequency response from 3 Hz to 23 kHz (±1 dB), exceptionally low self-noise, and true omnidirectional accuracy, the M23 G2 captures sound with unmatched precision and speed—making it ideal for room tuning, loudspeaker testing, and environmental acoustic analysis.

Building upon the legacy of the original M23, the Gen 2 (G2) model features reduced phantom power consumption, improved interface compatibility, and greater SPL handling—all in Earthworks’ rugged stainless steel chassis that’s built to perform reliably in both the lab and the field.

Unmatched Accuracy and Reliability

Every M23 G2 is individually calibrated to deliver a flat frequency response and textbook polar pattern. With a frequency range of 3 Hz to 23 kHz, it ensures the highest fidelity for measurement and reference applications, maintaining linearity across the entire spectrum—even at extreme SPLs up to 140 dB.

Improved Performance, Expanded Compatibility

The M23 G2 reduces phantom power consumption to just 7.2 mA, making it Earthworks’ most efficient measurement mic ever. This design enhances battery life for wireless systems and improves performance when multiple microphones are connected to an interface or measurement rig. Its optimized 1 kHz sensitivity ensures consistent results with a wide variety of audio interfaces and SPL meters.

Engineered for Real-World Use

Constructed from precision-machined stainless steel, the M23 G2 is both rugged and acoustically stable. Its XLR output ensures simple, reliable connection in any measurement chain, while Earthworks’ time-coherent design provides phase-accurate measurements essential for critical analysis and calibration tasks.

Key Features

• Extended 3 Hz – 23 kHz Frequency Response (±1 dB) – Delivers precision measurement for acoustic analysis and system tuning.

• Lowest Power Consumption – Just 7.2 mA from 48V phantom power for longer wireless and interface battery life.

• High SPL Handling – Up to 140 dB SPL without distortion, ideal for loudspeaker and live sound measurement.

• Ultra-Low Distortion & Self-Noise – Ensures the cleanest and most accurate readings possible.

• True Omnidirectional Response – Textbook polar pattern for consistent results at every angle.

• Optimized Sensitivity – Calibrated for use with a wide range of preamps, analyzers, and interfaces.

• Rugged Stainless Steel Body – Designed for years of professional use in the field or lab.

• Hand-Assembled in the USA – Designed, tuned, and built to exacting standards.

• Backed by a 2-Year Warranty – Peace of mind with Earthworks reliability and support.

Specifications

Type: Measurement Microphone (Free-Field Reference)
Frequency Response: 3 Hz – 23 kHz (±1 dB)
Polar Pattern: Omnidirectional
Sensitivity: Calibrated for consistent performance
Maximum SPL: 140 dB SPL
Power Requirements: 48V Phantom Power (P48), 7.2 mA current draw
Output Connector: XLR (balanced)
Construction: Stainless Steel
Manufactured: Designed, tuned, and assembled in the USA
Warranty: 2 Years

Applications

• Room and loudspeaker tuning

• Live sound system optimization

• Studio and broadcast calibration

• Acoustic research and measurement

• Environmental sound testing