Behringer Hellbabe Hb01 Ultimate Wah-Wah Pedal With Optical Control<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Multi-functional Wah-Wah pedal—offers everything you need for all styles and sounds </span></li><li><span class="a-list-item"> Total optical control for wear-and-tear-free pedal operation (no mechanical pots and switches) </span></li><li><span class="a-list-item"> Unique spring-back pedal mechanism with resistance adjustment for ultimate playing style (option to remove) </span></li><li><span class="a-list-item"> Heel-down frequency range freely adjustable via Range control (440 Hz to 250 Hz) for use even with bass guitars </span></li><li><span class="a-list-item"> Ultra-musical Q control for precise filter shaping to achieve vocal-like effects </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/410Djgu7GVL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41zN-vEUbfL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/318A8IWWsJL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31onQExyVtL.jpg" noproxy>