A detailed replica of one of the world's most iconic effects - the Dallas Rangemaster treble booster. Originally produced in 1965, it has been used by many of the worlds most respected artists including Eric Clapton, Tony Iommi, Rory Gallagher, Brian May, Marc Bolan, Ritchie Blackmore and many more. The Dallas Rangemaster was initially designed to increase the signal strength of the guitar going into the amplifier, and to increase tones at the high-end of the spectrum. The need for a treble booster arose in the mid-1960s as British tube amplifiers tended to produce a slightly dark, muddy sound when overdriven, particularly when used with humbucking pickups. Although classed as a treble booster, the vintage components in the Rangemaster circuitry could add characteristic distortion and overtones to give a more distorted but focused tone with many classic British amplifiers.