Earthworks M30 G2 30 kHz Measurement Microphone

The Earthworks M30 G2 is a professional 30 kHz omnidirectional measurement microphone engineered for acoustical analysis, system calibration, and audio testing. Designed for uncompromising precision and reliability, it continues the legacy of the M-Series as the industry’s reference standard for accurate sound measurement since 1995.

This pre-polarized condenser microphone offers an exceptionally flat frequency response from 5 Hz to 30 kHz (±1 dB), ensuring faithful audio capture across the audible spectrum and beyond. With extremely low self-noise (23 dBA) and the ability to handle up to 140 dB SPL, the M30 G2 provides exceptional performance in both quiet studio environments and high-SPL live sound applications. Its updated sensitivity and reduced power consumption make it highly compatible with modern audio interfaces and measurement systems.

Built with precision-machined stainless steel and rated IP54 for dust and moisture resistance, the M30 G2 is ready for demanding field use. Whether in laboratory-grade measurement setups or on-site sound system tuning, this microphone offers the accuracy and consistency professionals trust worldwide.

Key Features

• Extended Frequency Response: Exceptionally flat ±1 dB from 5 Hz to 30 kHz for accurate sound measurement
• High SPL Handling: Captures up to 140 dB SPL (48V phantom power) without distortion
• Omnidirectional Pattern: True free-field reference for uniform off-axis response
• Low Self-Noise: Just 23 dBA for ultra-clean measurement in quiet environments
• Reduced Power Consumption: Draws only 7.2 mA at 48V, improving wireless and multi-mic efficiency
• Precision Engineering: Machined stainless steel housing with IP54 environmental rating
• Enhanced Compatibility: Optimized 1 kHz sensitivity ensures consistent readings across audio interfaces
• Made in the USA: Designed, tuned, and assembled in the United States for long-term reliability

Technical Specifications

• Microphone Type: Pre-polarized condenser
• Diaphragm Size: 6 mm
• Polar Pattern: Omnidirectional
• Flat Frequency Range (±1 dB): 5 Hz – 30 kHz
• Low Frequency Cutoff (-3 dB): ≤ 3 Hz
• High Frequency Cutoff (-3 dB): ≥ 40 kHz
• Sensitivity: -40 dBV/Pa (10 mV/Pa) ±2 dB
• A-weighted Self-Noise: 23 dBA
• Maximum SPL (3% THD): 140 dB SPL (P48), 133 dB SPL (P12)
• Power Requirements: P48 (7.2 mA) / P12 (4.8 mA)
• Minimum Load Impedance: 1 kΩ
• IP Rating: IP54
• Construction: Machined stainless steel
• Dimensions (L × W): 7.0 × 0.86 in (17.8 × 2.18 cm)
• Weight: 0.30 lb (0.14 kg)
• Color: Silver
• Country of Origin: USA
• Warranty: 2 years

What’s in the Box

• Carrying Case
• Calibration Chart
• MC1 Microphone Clip
• OMW2 Windscreen
• ADP1 Calibrator Adapter
• Mic Stand Thread Adapter