Many well-known companies have tried to replicate the unique sound of the DUNLOP - MXR pedal without any success. The famous Phase 90 Script Logo pedal remains at the top of the list for many renowned artists. Its first version, which appeared in the late '70s, essentially defined the classic phaser sound of the era across many music genres such as pop, rock, jazz, and more. The Phase 90 Script Logo, manufactured at the MXR Custom Shop, clearly reproduces the headroom and fidelity of the first version with warm and smooth changes across four levels of phasing, reducing unwanted mid-range frequencies.