The Killer Wails preserve the original tonal integrity of vintage wahs and overcome familiar shortcomings, such as excessive noise and unreliable mechanical parts. Utilizing light sensor technology, there are no clunky pops, no irritating scratching sounds, and no pots to wear out. Machined from solid billet aluminum, the heavy duty housing will provide long life --on and off the road.

Features:

- Preserve the indelible tonal integrity of vintage wahs
- Improved design reduces excessive noise upgrades components
- Utilizing light sensor technology for no clunky pops, no irritating scratching sounds, and no pots to wear out & replace
- Machined from solid billet aluminum, the heavy-duty housing will provide long life
- Faithful reproduction of beloved vintage wah sounds
- Specially-designed filter changes frequency & the sharpness of the filter
- Spring-loaded rocker returns the treadle to its resting/bypass position when you remove your foot & automatically engages when you press forward
- Operable via standard 9V alkaline battery or optional Tech 21 DC9 power supply

Rather than utilizing simple band-pass or low-pass filters, the Killer Wails faithful emulation use a specially-designed filter. It not only changes the frequency, it also changes the Q, which is the sharpness of the filter.