Earthworks M30

The M30 is a precision-designed 30 kHz omnidirectional measurement microphone, ideal for acoustic measurements, including speaker design and quality control, sound system setup and troubleshooting, room acoustics, or any application requiring an accurate free-field measurement microphone.
Accuracy, consistency, and reliability have made the Earthworks M30 measurement microphone the first choice of live sound professionals, acousticians, and researchers worldwide for nearly twenty years. Used on countless large-scale concert tours, as well as in scientific research labs, tropical jungles, and rocket test facilities, the M30 and its M-series counterparts have proven to be laboratory-grade audio instruments that can handle any environment.
The audio performance of the M30 is unparalleled. It features a flat frequency response extending from 3 Hz to 30 kHz, an exceptionally consistent omnidirectional polar response, an SPL rating of 140 dB without distortion, and no handling noise. With temperature-compensated electronic components, the M30 is designed to provide repeatable results regardless of the environment.
The extremely fast impulse response and linear phase response make the M30 ideal for use with high-quality real-time audio system measurement software based on FFT, such as SMAART™, SIM™, REW™, Electroacoustics Toolbox™, FuzzMeasure™, and others, as well as for use in PA system alignment and speaker design.
Each M30 is individually hand-adjusted and tested and comes with its own printed frequency response chart. An electronic calibration file (ECF) is generated for each microphone during the final test and can be downloaded for free after product registration.