NAD - VISO HP50 (Black)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> Sensitivity: 100 dB (@1kHz) </span></li><li><span class="a-list-item"> Impedance: 32O (passive) </span></li><li><span class="a-list-item"> Transducer Design: Dynamic driver </span></li><li><span class="a-list-item"> Frequency Response: 20-20kHz (± 3dB) </span></li><li><span class="a-list-item"> Bass Extension: -3dB at 15Hz </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31Iz8-M1LwL.jpg" noproxy>