Featuring Audio-Technica's UniLine line-cardioid element, the U853RU UniLine condenser hanging microphone is equipped with UniGuard innovations that offer unsurpassed immunity from radio frequency interference. The U853RU microphone is a phantom-powered and 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.