A switchable, combination Optical Wah and Volume pedal. Boost knob allows up to 20dB of boost in Wah mode. Volume mode offers a smooth audio taper great for volume swells or straight volume control. Buffer Circuit prevents signal loss and maintains tone. Silent switching prevents any switch “pop” from getting to the amp. Great for pedalboards at 7” L x 4.5” W x 2.75” H. Powers from one 9V battery or optional Morley adapter. Equipped with MQ2 custom Inductor, LED Indication, cold-rolled steel housing, quick clip battery door, glow-in-the-dark treadle grip / toe-end logo and a one-year warranty. Lifetime Warranty available with registration.