Big Bad Wah News from Vox: The Big Bad Wah's dual-mode design offers two distinct wah sounds in a single pedal.

Wah One is classic VOX; with that decidedly sweet UK tone.
Wah Two provides Joe Satriani's original drive and voice controls, delivering a wide range of sound-creation possibilities.
Big Bad Wah is one in a series of pedals designed by VOX and guitarist Joe Satriani. Joe contributed numerous ideas that were unheard of in existing wah pedals, giving the Big Bad Wah an unparalleled range of sounds from vintage to modern, as well as some that are totally original. The heart of any wah pedal is the inductor; the Big Bad Wah allows you to select between a vintage UK style inductor, and the more modern USA style. Designed to Joe Satriani’s custom specifications is the design of the pedal pot itself, delivering a smooth, musical tone throughout the entire sweep of the pedal.
Wah One faithfully replicates the classic VOX wah sound that conquered the world.
Wah Two delivers all the wah pedal know-how that Joe has accumulated over his many years of experience. The Drive knob mimics the Wah One gain at its lowest setting, and delivers a 10dB boost at the maximum settings for those aggressive, growling overtones. One of the most powerful aspects of Wah Two is the Voice switch, providing traditional wah voicing; or a dark, resonant tone reminiscent of a vintage talk-box.
This is the ultimate wah pedal not just for Joe Satriani an dVox fans but for any wah-pedal user who enjoys creating Big Bad Wah-Wah-Wah-Wah-Wah-Wah-Whip-Wah