Sonarworks XREF 20 Mic, Measurement Microphone, condensor, for recording studios- professional measurement microphone with individual calibration against ANSI-certified microphone. Includes: microphone with XLR connection, individual 0° calibration curve; individual off-axis calibration curve for best results with Sonarworks Reference 3 Software (MAC), 21 days trial version of Sonarworks Reference 3 included, Technical specifications: pre-polarized electret-condenser capsule; linear frequency response between 20 Hz and 20kHz with calibration curve (supplied with mic) at omnidirectional polar pattern; sensitivity: -37dB/Pa (14 mV); self noise: 24 dB; S/N ratio: 70 dB; dynamic range: 106dB; max SPL: 132 dB. Requires: 48V phantom power