Equipped table-mount boundary microphone with mute switch/LED, Frequency Response 40 - 13,000 Hz, Open Circuit Sensitivity -40 dB (10mV), Impedance 200 ohms, Max. Input Sound Level 142 dB SPL, Dynamic Range 114 dB, S/N Ratio 66 dB, Phantom Power 11-52V DC, 2 mA typical, Weight 66g