MXR Phase 90 — A true icon of guitar effects history, the MXR Phase 90 has defined the sound of phaser pedals since the 1970s, gracing the boards of countless legendary players. Its simple one-knob design belies the rich, swirling, lush modulation it produces, making it just as relevant on modern boards as it was decades ago. This example is in immaculate condition and includes its original packaging.