<div class="detailmodule_html"><div class="detail-desc-decorate-richtext"><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title> </title> <div style="width:100%;height:100%;"> <div style="width:100%;text-align:center;height:30px;" id="title"> <span style="font-weight:bold;font-size:16px;">Optimal AMP‑I4Ⅱ Professional 4 Channel Headphone Amplifier Audio Compact Stereo Amp+6.35Mm 3.5Mm Input Volume Control</span> </div> <div id="description"> <div class="ui-box-body"> <span style="font-size:18px;"> <div> Input interface: stereo 3.5 mm TRS interface, stereo AV interface <br />Input impedance: 22K ohms <br />Input signal level: +22dB <br />Output interface: stereo 14inch TRS interface, stereo 3.5 mm TRS interface <br />Output impedance: minimum 16 ohms <br />Maximum gain: 19dB/channel <br />Signal-to-noise ratio: Greater than 98dB <br />Power supply: DC5V, external power adapter <br />Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. <br />Plug Type :EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. <br />Voltage: AC 220V <br />Voltage: AC110V <br />Colour:Black <br />Material:ABS <br /> <br />Package Contents: <br />1 x 4-way headphone amplifier <br /> <br />Only the above package content, other products are not included. <br />Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. </div></span> </div> </div> <div id="details"> <div class="ui-box-body"> <span style="font-size:18px;"> <table border="0" cellpadding="0" cellspacing="0" style="width: 100.0%;"> <tbody> <tr> <td style="margin: 0 auto; text-align: center;"><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p><p></p></td> </tr> </tbody> </table> </span> <br /> <p> <br /> </p> <p> </p> </div> </div> </div></div></div>