The <b>Telex HR-2</b> is a dual-sided headset featuring passive noise reduction by means of its large muffs, as well as a dynamic noise-cancelling microphone. It provides a noise-reduction rating of 21 dB, making it suitable for isolation in moderately noisy environments. A soft moleskin-covered headband provides comfort, and the headset folds as well for ease of transport and storage. Its dynamic boom microphone offers a frequency response of 150 Hz to 8 kHz, more than suitable to hear human speech. <br><br> The HR-2R's dynamic microphone offers a frequency response optimized for speech intelligibility, noise cancellation, and simple adjustment on a rotating gooseneck boom mount. The headset features 5' cord and an A4M connector <br><br>