The 'Father of Loud', he gave his name to the world-famous, ubiquitous amplifier
Jim Marshall in 2000. Almost everybody who rocked over 40 years used his equipment. Photograph: Robert Knight/Redferns
When Jim Marshall, who has died aged 88 of cancer, opened a music store in 1960, his customers included some of rock'n'roll's most prominent guitarists. They wanted a new type of amplifier. Marshall seized the opportunity and built it for them. His work would earn him the nickname the Father of Loud.