Equipped with Audio-Technica's UniLine line-cardioid element with a tightly focused 90 acceptance angle, the U853AU UniPoint UniLIne Condenser Hanging Microphone features UniGuard innovations that offer unsurpassed immunity from radio frequency interference. The battery or phantom-pored microphone accepts interchangeable elements, available in cardioid, hypercardioid, omnidirectional and UniLine line cardioid polar patterns. It also offers an 80 Hz low-cut UniSteep filter that reduces pickup of low-frequency ambient noise.