Grado SR60i Headphones (Discontinued by Manufacturer)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Vented diaphragm </span></li><li><span class="a-list-item"> Non resonant air chamber </span></li><li><span class="a-list-item"> Mini plug w/ 1/4 adaptor </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51T9W65jR0L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51b%2B2NAGkCL.jpg" noproxy>