This vintage DOD Phasor 201 Analog Phase Shifter is an original yellow guitar effect pedal that will add a unique and distinctive sound to your music. Made by one of the top brands in the industry, this phaser is perfect for any electric guitar player looking to enhance their sound. It has an analog/digital feature that allows for a smooth and natural tone, and is easy to use with its simple design. The DOD Phasor 201 is made in the United States and is a great addition to any musician's collection.