This 1/2" measurement microphone is designed for free-field acoustic applications. The MM 220 features a high-quality pre-polarized measurement capsule (MK 250) compatible with standard 48V phantom power systems. It delivers a frequency response of 3.5 Hz to 20 kHz (±2 dB) with an operating range from 15 dBA to 134 dB. The microphone connects via a fixed 2-meter XLR cable and provides 50 mV/Pa sensitivity at 250 Hz. Suitable for precision acoustic measurements and calibration using pistonphones like Type 5002, it comes packaged in a wooden case with various optional accessories including windshields, nose cones, and drying adapters for different environmental conditions.