Designed for guitar, bass, or keyboards, the Morley MWV Mini Wah Volume pedal combines an electro-optical wah with volume control in a size that's perfect for any pedalboard. The MWV boasts a traditional wah tone, a smooth audio taper for volume control, and LED idnicator, wah level control, and easy-access battery compartment. It all comes in a road-ready cold-rolled steel housing.