Classic phaser pedal in excellent working condition. The MXR Phase 90 Guitar Effects Pedal (M101) is a classic analogue shifter and phaser pedal designed by the renowned brand MXR. This versatile pedal can be used with acoustic electric guitars, electric guitars, and bass guitars, providing a range of phasing and shifting effects to enhance your sound. With its vintage appeal and reliable performance, the MXR Phase 90 is a must-have for any guitarist or bass player looking to add some depth and character to their music.