Tech 21 SansAmp Bass Driver DI V2<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> "Presence， Drive， Level， Blend， Bass and Treble controls Three outputs: an effected XLR， effected 1/4 in. and parallel， uneffected 1/4 in. Phantom power operable， optional DC power supply  or 9 V alkaline battery " </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/514sdxxiOdL.jpg" noproxy>