The Boss Aw-3 Auto Wah offers guitarists dynamic wah and a huge selection of classic auto wah effects. There is also humanizer effect, this effect can simulate human vocals. The effect of this pedal adjusts its effect according to the velocity. The pedal not only has an input for electric guitars but also for bass guitars. It is possible to control wah with an expression pedal thanks to the EXP Pedal Mode. In Manual mode it is possible to set the tempo of the effect to a fixed value. It is also possible to control the tempo of the effect with an expression pedal.