Question 1388: I want that fridge

 After a successful career as a drummer and drum teacher of drum technique, X, an electrical engineer by profession, started selling drums, cymbals and drum-related accessories in London. Musicians like Ritchie Blackmore(Deep Purple), Jim Sullivan and Pete Townshend(The Who) suggested he should sell guitar equipment too. As a response, he came up with a product(pic 1) which revolutionized live music and music in general. Identify X or the company he subsequently started.

1

Answer: Jim Marshall and Marshall Amps.