The Boss AW-3 Dynamic Wah guitar effects pedal gives you all the wah you need! It's not just for guitarists — the AW-3 is Dynamic Wah is like two pedals in one, with dedicated inputs for both guitar AND bass. Choose between fixed and auto wah, or add an optional expression pedal. You also get a 'Humanizer' function that lets you create wild, human-voice type sounds! This pedal can be controlled automatically via a tempo control, or externally using an expression pedal. Put great wah effects into your pedalboard setup with the compact, easy-to-use, and downright awesome AW-3 Dynamic Wah!