Maxon 9-Series Vintage Overdrive Pro<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Switchable 9V or 18V operationReacts to picking dynamicsTrue-bypass </span></li><li><span class="a-list-item"> This combination clean booster/overdrive features switchable 9 or 18 volt operation using an internal voltage doubler </span></li><li><span class="a-list-item"> The VOP-9 Pedal reacts precisely to picking dynamics and also features true bypass switching </span></li><li><span class="a-list-item"> Since their introduction in the early 1980's， Maxon 9-Series effect pedal designs have achieved a legendary， almost mythical status with pedal connoisseurs around the globe </span></li><li><span class="a-list-item"> The reasons for this are simple--superior sound quality and innovative features that offer a seamless interface between performer and performance--nothing more， nothing less </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/513mE1dpH9L.jpg" noproxy>