In similar fashion to how Leo Fender - an electrician - became a guitar manufacturer, Jim Marshall did not originally intend to produce amplifiers. He was a drummer, who owned a drum shop in Hanwell, London. But in 1963, Marshall and company produced their first amplifiers: the legendary JTM 45s. Intended as a cheaper alternative to the pricey American-made guitar amps, Marshall’s amplifiers began taking the British music scene by storm with their higher output and now-iconic Class A/B chime, finding their way onto the stages of The Who, Jimi Hendrix, Led Zeppelin, and Eric Clapton to name a few. With such an impressive track record and roster of players, now - it seems - a rock show without a Marshall on stage is absolutely unimaginable.