In the late 1970's the overdrive pedal was arguably perfected when Japanese engineers designed the sound that we now know as the heart and soul of so many of our favorite artists, recordings and sounds. Players ranging from The Edge, Trey Anastasio, Buddy Guy, Kirk Hammett, John Mayer, SRV, Carlos Santana and thousands more from every possible genre have utilized and depended on this classic iconic green box. If a single effect pedal was chosen to board a Voyager 3 mission and be solely responsible for showing the universe the sound of overdrive, it would undoubtably be Tube Screamer. It is probably the most produced and sold pedal in the history of guitar pedals!