It's in excellent condition with minimal signs of use. The MXR® PHASE 90 is a classic phaser effect pedal from MXR, first introduced in 1974, and beloved by many guitarists. It's particularly known as an essential element in Eddie Van Halen's sound, characterized by its warm and unique sound. With its simple design and operation, you can adjust the phaser speed with just the SPEED knob. Increasing the SPEED creates a bold and psychedelic effect, while lowering it provides smooth and deep modulation. Furthermore, it adds a subtle wobble to the original sound without distorting it, making it versatile for both rhythm and lead guitar, and used widely from funky cutting to hard rock.