"Earthworks Audio M23 Gen2, Condenser Measurement Microphone, Polar pattern: Omnidirectional, Frequency range: 5 - 35,000 Hz (+/-1 dB), Requires phantom power: 48 V with 7.2 mA or 12 V with 4.8 mA, Maximum sound pressure level: 140 dB SPL at P48 /...