In the early 1960s, a handful of brash British kids needed a new sound for a new kind of music. They marched into a music store in their blue-collar town and asked the gentleman behind the desk to build them an amplifier with leg-shaking power and jaw-dropping tone. So he did. This first-ever biography tells the story of Jim Marshall - founder of Marshall Amplification and creator of guitar amplifiers that have defined the sound of rock and are prized...