Tech 21 Boost Series BST-F Boost Fuzz Guitar Distortion Effect Pedal<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> All analog circuitry </span></li><li><span class="a-list-item"> SAG control allows notes to bloom and sing. </span></li><li><span class="a-list-item"> Up to 21dB of clean boost; can be used independently from the effect. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/51H26XEAE%2BL.jpg" noproxy>