The EBS WahOne is a truly versatile wah-wah pedal designed specifically to enhance your bass groove. This unique pedal is based on the classic wah-wah concept but with extended features. With an easy dial-in design the choice is yours - use it as a wah-wah filter or volume pedal. Extra goodies. The WahOne offers several cool options like the built-in tube simulator circuit, reversed action of the footboard let you choose between 'whooa' or 'aoowh' type of effect, Low-pass filter and Hi-Q setting that narrows the midrange span that the effect work within. All these features are activated by switches on the front panel. There's also a Range control that decides where in the frequency range the pedal will create the effect. Turn the WahOne into a Volume pedal by simply pressing a little switch on the front panel.