Amazon.com: EBS WahOne Wah-Wah/Volume Pedal for Bass : Musical Instruments
Amazon.com: JOYO Wah-II/Wah 2 Multimode Pedal with Wah-Wah & Volume/Bypass Dual Mode Function, Q Value Knob, Mini Multifunction Electric Guitar Effects, Tone Filter for Country Surf Funk Sound Music Bass : Musical
Amazon.com: MOOER Envelope Analog Filter Dynamic Auto Wah Pedal, Exaggerated slap back funk, Subtle sultry abience, Static frequency filter effects for Guitar and Bass : Musical Instruments