The Morley Power Wah Volume (Model PWV II Pro) is a wah and volume pedal in a single unit. It features a patented electro-optical circuit that eliminates the need for potentiometers, ensuring a smooth, consistent performance with no static. The pedal is built with a heavy-duty steel chassis and has a footswitch to engage the wah effect, while the pedal can be used for volume control at any time. It has a high-quality buffer circuit and an LED indicator for the wah effect status.