If you have ever played any type of electric guitar in your life, chances are good that you have plugged into a Marshall amplifier.  And it's all because of this man.

Jim Marshall, whose pioneering Marshall amplifiers were behind some of the biggest names in rock and roll, including Jimi Hendrix, Pete Townshend of The Who, and Eric Clapton, and who is considered “the founder of loud” and responsible for the sound of rock, has died.

Jim Marshall was a British music store owner who influenced the raucous sound and chest-thumping volume of rock-and-roll with his Marshall amplifiers.  You can read more about his life here.

And yes, (@ 1:18) they do go to 11...