The Electro Harmonix Stereo Talking Machine Vocal Formant Filter promises a sound unlike anything youve heard before. And there are countless ways to make it your own. With nine voices ranging from AH-OO to OW-EE this pedal is equipped with an abundance of filters to suit you and your music. And you can sculpt them with precision using the attack and decay controls. The effects mimic human speech meaning the sounds are wonderfully organic. Achieve anything from distorted growls to super-clean synth-like sounds whilst your dynamics control the vowel shaping. The expression pedal input allows for even more scope and versatility but dont worry about recreating your favourite effect you worked long and hard for - the nine preset locations let you save and access your sounds in no time at all.