PLACID has a wide range of microphones, 1/4″ microphones for high noise levels and high frequencies, regular 1/2″ microphones (free field and pressure field) and low noise 1″ microphones. The measurement range is from 16 dB(A) up to 160 dB(A). Prepolarized and non-prepolarised microphones. IEC61094 WS1F, WS1P, WS2P and WS3P designations. The frequency range is