The E523D incorporates 2 electret condenser capsules in an XY 90? arrangement. This popular arrangement provides easy to achieve, high definition stereo results. The E523D is suitable for TV production or outdoor stereo recording. A built-in blue LED indicates when microphone is powered by battery or phantom power. With balanced outputs for pro audio and video system use and a low-cut switch for reducing noise, it meets the demands of both professionals and amateurs for a true stereo microphone.