The PH7 from Ibanez has a 2-way mode switch and 4 knobs. When you switch the switch and use the knobs by turning them in the clockwise or counter-clockwise direction while the pedal is engaged with an instrument plugged in and sound emanating from it, the sound of the Phaser pedal changes its sound from one phaser sound to another. This pedal works just as it should and sounds like it does. The Tone Lok knobs snap in and out of the body when you press on them as you would any other button in the world. This helps you so that when you find your most best phaser sound, it cannot be easily changed. For added Tone Loking, you could probly super glue or duct tape them in place, too.