Do you like the parked wah sound but don't like the thought of having to find the same spot on your wah pedal each time you step on it? The the Wilson Effects Parked Wah is the answer to all of your problems. The Parked Wah is an actual inductor based wah circuit with every possible control imaginable for your wah sound. Level controls the amount of volume or output of the effect. Mids controls the mi-range parameters of the wah circuit. Growl controls the bass and gain of the wah circuit. Last but not least Sweep controls what physical position you are in in the sweep of the wah. In addition to all of these controls the Parked Wah also boasts an expression pedal jack if you'd like to go at it traditional style. Please note that when plugging into the expression pedal jack the wah's sweep will be reversed. This is due to some expression pedals will over rotate and cause noise at the toe of the pedal when set up in a traditional fashion. To top it off it is also fuzz friendly. The Parked Wah is true bypass and is powered by an industry standard 2.1mm center negative power supply or 9v battery.