The U853PMU UniLine condenser hanging microphone features Audio-Technica's UniLine line-cardioid element and comes equipped with a wall/ceiling plate power module for permanent installation in a standard, single-gang electrical box. The Audio Technica U853PMU microphone is phantom-powered and comes equipped with UniGuard innovations that offer unsurpassed immunity from radio frequency interference. It accepts interchangeable elements, available in cardioid, hypercardioid, omnidirectional and UniLine line cardioid polar patterns. Its 80 Hz low-cut UniSteep filter reduces pickup of low-frequency ambient noise.