This is a detailed replica of one of the worlds most iconic effects. The Dallas Rangemaster ® treble booster, originally produced in 1965 has been used to by many of the worlds most respected artists including Eric Clapton, Tony Iommi, Rory Gallgher, Brian May, Marc Bolan, Richie Blackmore and many more... although classed as a Treble Booster the Rangemaster ® was used as an overdrive pedal to give a more distorted but focused tone with many classic British amplifiers that included the legendary Marshall Bluesbreaker and Vox AC30 Folded Metal Casing Germanium Transistor Boost Control Limited production