ART Pro Audio HeadAmp 4 Four Channel Headphone Amplifier<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> 8 output (4-channel) stereo headphone amp </span></li><li><span class="a-list-item"> 1/8-inch as well as 1/4-inch inputs and outputs </span></li><li><span class="a-list-item"> Lower noise， lower distortion and more output </span></li><li><span class="a-list-item"> Custom extruded stackable metal case </span></li><li><span class="a-list-item"> Ideal for virtually any home or project studio </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/413ba6Ex8cL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41938iTNP5L.jpg" noproxy>