Dr. Jim Marshall, amplifier pioneer and the "father of loud" has passed away at 89. Marshall, who founded the amplification company has been credited with the as one of the forefathers of rock music alongside Leo Fender, Les Paul and humbucker inventor Seth Lover. His company made this statement:

It is with profound sorrow that we announce the passing of our beloved founder and leader for the past 50 years, Jim Marshall. While mourning the Guv'nor though, we also salute a legendary man who led a full and truly remarkable life. In addition to the creation of the amps chosen by countless guitar heroes and game-changing bands, Jim was also an incredibly humble and generous man who, over the past several decades, has quietly donated many millions of pounds to worthy causes.

You can leave condolences and comments on the memorial page launched for him here.