JOYO JF-322 Wow Wah is an auto-wah with a wide range of sounds. It is extremely dynamic. With its 4 controls (Sensitivity, Bias, Resonance and Decay) you have your personal sound at your fingertips. The filters dynamics will surprise you and your sound will spring to life when you engage the pedal. If you feel a bit stuck in your playing, try adding a new element to your music and give the Wow-Wah a try, you won't regret it. Of course it has true bypass