Morley PDWII Pro Series II Distortion / Wah / Volume Pedal w/ Bonus Power Supply Combo Wah, Volume and Distortion all in one handy pedal Equipped with Morley's improved High Q Wah: Wider sweep with more lows and high Is also an optical Volume pedal when Wah is bypassed Distortion works independently of Wah and Volume Distortion has DRIVE, LEVEL and TONE control