Mad Professor Snow White Auto Wah Effect Pedal w/ Box - UsedThe Mad Professor Amplifications Snow White Auto Wah is a versatile auto wah pedal designed to deliver dynamic and expressive filter sweeps for both guitarists and bassists. With it's responsive Sensitivity, Resonance, Bias (Range), and Decay controls, players can easily dial in a wide range of tones, from subtle filtering to funky wah sounds. This pedal is in excellent condition with no blemishes or imperfections to its casing or writing.