The Olympus ME-51S is a plug-in microphone suitable for stereo recording applications in WMA format in quality SHQ mode. The wide frequency response of 100-15,000 Hz of this Olympus stereo microphone is capable of producing ultra-clear audio at any sound levels. The recording level indicants can be seen on the LCD while using this condenser cable microphone with WS model Digital Recorders. With a sensitivity of - 40 dB, this Olympus stereo microphone is very much responsive to quieter sounds as well for a better audio output. The 3.5 mm plug allows this condenser cable microphone to be used with digital recorders for enhanced functionality. You can either plug the Olympus ME-51S directly into your device or use the 3.3 feet extension cable for hands-free usage.