The NUX Phaser Core Guitar Effects Pedal features two types of phaser effects including 4 stage and tape 8-Stage, in one compact pedal. These different stages can be tweaked with the additional control knobs to achieve a unique sound that will add a great sweeping effect to your tone. Also includes a tone lock function to temporarily freeze your settings during live performances. Its tonal versatility makes the Phaser Core an ideal addition to any pedalboard.