IK Multimedia MEMS Microphone for ARC System, Condenser Measurement Microphone, Omnidirectional, Free field, Calibrated frequency response when used with ARC: 20-20,000 Hz +/- 0.5 dB, Transformerless output, Electronically balanced, Impedance: 100 Ohm, Signal-to-noise ratio: 65 dB (A), Maximum sound pressure level: 124 dBSPL, Phantom power: 12 - 48 V, Dimensions: 129.5 mm x 23 mm, Weight: 25 g, Scope of delivery: measurement microphone and microphone clamp