You need the famous Morley PBA-2 Dual Bass Wah for that funkin', slappin', groovin' kind of sound. But sometimes a more straight-ahead vintage effect is called for. Just step on the button and you're playing a Traditional Wah. The PBA-2 is 2 super high-end pedals for the price of one. Features a wah level control.Please message us if you have any questions.