Precision Measurement Microphones

The Earthworks Measurement Series has become the accepted standard for affordable, reliable reference and measurement microphones that are accurate in the time domain and frequency response. They are remarkably stable with respect to temperature and atmospheric conditions and are optimized for clean, very fast impulse performance providing accurate wideband response with virtually no handling noise. They are ideally suited for on-location acoustical measurements including loudspeaker design and quality control, sound system setup and troubleshooting, room acoustics, or any application where an accurate free-field measurement microphone is required.



  • Near-perfect omnidirectional polar pattern
  • Hand-tuned and tested ruler flat frequency response
  • Temperature-compensated electronics for repeatable results you can trust
  • Electronic calibration file generated for each microphone

Unparalleled Performance

With an audio performance that is unparalleled, Earthworks Measurement Series microphones have an extended flat frequency response, an exceptionally uniform omnidirectional polar response, high SPL rating without distortion, and have no handling noise.

The Industry Standard

Extremely quick impulse response and linear phase response make Earthworks M Series microphones especially well-suited for use with high-quality FFT-based real-time audio system measurement software like SMAART™, SIM™, REW™, Electroacoustics Toolbox™, FuzzMeasure™ and others, as well as for use in PA system alignment and loudspeaker design.