The Earthworks M 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.
Earthworks M23mp Microphone Specs:
Frequency Response: 9Hz to 23kHz ±1/-3dB
Polar Patern: Omnidirectional
Sensitivity: 30mV/Pa (-30.5dBV/Pa)
Max Acoustic Input: 142dB SPL
Noise: 22dB SPL equivalent (A weighted)