Aguilar AGRO Bass Distortion Effect Pedal<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Separate Saturation and output level controls </span></li><li><span class="a-list-item"> Contour control: broad spectrum mid scoop centered around 900Hz </span></li><li><span class="a-list-item"> Presence control: + 6dB/-20dB &gt;4kHz </span></li><li><span class="a-list-item"> Power: Nine-volt battery or optional universal power supply </span></li><li><span class="a-list-item"> Heavy Duty steel construction </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/411uMX1-SyL.jpg" noproxy>