Sony ECM-ZS90 Switchable Stereo Microphone with Super Directional Mode (Discontinued by Manufacturer) Versatile microphone is ideal for digital recordings Electret condenser element with great dynamic efficiency Choose stereo mode for music and conferences; choose super-directional mode for large lecture halls May be hand held, placed in desktop holder or placed in optional mic stand Wide 150 to 20,000 Hz frequency range ideal for anything from music to lectures