Check out this awesome demo from Dunlop of their MXR EVH Phase 90 and EVH Flanger.
His signature Flanger features all the same analog bucket-brigade technology and incredible range of controls of the timeless MXR classic Flanger. In addition, the pedal includes a special “EVH” Button that instantly overrides all controls and gives you a setting that was painstakingly developed to recreate Eddie’s favorite “Unchained” sound.
Similarly, at the heart of the EVH Phase 90 is the same classic, all analog “Block Logo” circuitry that has made it one of the most revered “one knob wonders” on pedal boards around the globe. However, this pedal features a button that when depressed gives you a second “Script Logo” phasing option, which was the type of circuitry prevalent in the early days of the pedal’s creation which EVH favored on many of his classic licks. The tonal option that this button provides is also known as the popular “R28″ modification.