"From its humble beginnings in 1960s London to providing the backline for some of the world's loudest performances, Marshall amplifiers have become iconic in the music world and are renowned for their powerful sound and instantly recognizable design. Ever since a young Pete Townshend asked Jim Marshall to place two 4x12 cabinets on top of each other, the Marshall stack has been much imitated, especially after a certain guitarist named Jimi Hendrix also adopted the trend. Marshall amplifiers have since shaped the rock and metal genres, leaving an indelible mark on musical history."