Fans of Queen recognize the unmistakable guitar tones of Brian May. His smoothly overdriven, almost violin like guitar solos can be heard in such songs as "Bohemian Rhapsody" and "You're My Best Friend." His signature guitar tone is largely developed by passing his guitar signal first through a treble booster, then through the input of a hand made low wattage "Deacy" amplifier made for Brian by Queen bassist John Deacon. The output of the "Deacy" amp then feeds an array of up to twelve non top boosted Vox AC-30 amplifiers.

Vox introduced the VBM-1 Brian May Special amplifier in 2003. Vox wanted to build a package that would combine both the treble booster and the sound of the "Deacy" amp circuit. Brian May allowed Vox engineers access to the "Deacy" amp so they could develop the circuits necessary to accurately reproduce these unmistakable tones.

The amp featured a unique white vinyl covering and a "Brian May" logo on the grill.