Jim Marshall, builder of amplifiers, poses with one of his products at the “Musikmesse” in Frankfurt. (Ralph Orlowski/Reuters)

Nikki Sixx of Motley Crue:

R.I.P. Jim Marshall. You were responsible for some of the greatest audio moments in music’s history and 50% of all our hearing loss......

— Nikki Sixx (@NikkiSixx) April 5, 2012

Kenny Wayne Shepherd of the Kenny Wayne Shepherd band:

RIP Jim Marshall. What a legacy. One of the most iconic companies in music history.

— Kenny Wayne Shepherd (@KWShepherd) April 6, 2012

Dave Navarro of Jane’s Addiction:

RIP Jim Marshall ... Thank you

— Dave Navarro (@DaveNavarro) April 6, 2012

Joe Perry of Aerosmith:

Great sorrow hearing bout the great Jim Marshall passing. Everytime we plug in and make people smile,we owe him debt beyond counting!!!

— Joe Perry (@JoePerry) April 5, 2012

John Flansburgh of They Might be Giants:

JF of TMBG: The 1st time I ever played a Marshall was recording Birdhouse In Your Soul. That worked out well. Much respect, RIP #JimMarshall

— They Might Be Giants (@tmbg) April 5, 2012

Dave Mustaine of Megadeath:

I have never been sadder than today. My dear friend and father figure Dr. Jim Marshall OBE has passed away. I am at a loss for words...

— Dave Mustaine (@DaveMustaine) April 5, 2012

Jeff Stinco of Simple Plan:

RIP Mr. Marshall, founder of Marshall amps. You made me dream of loud guitars in arenas all my life. Thank you very much.

— Jeff Stinco (@jeffstinco) April 5, 2012

The Who:

RIP Jim Marshall, Father of Loud.....

— The Who(@TheWho) April 5, 2012

The Pixies:

RIP Jim Marshall...you made great amps. Thankyou fb.me/1Kjqww54M

— PIXIES (@PIXIES) April 5, 2012

Marshall guitar amplifiers are used by guitarist Slash during a concert in Hong Kong. (Ed Jones/AFP/Getty Images)

The news of Jim Marshall passing is deeply saddening. R & R will never be the same w/out him. But, his amps will live on FOREVER! \,,/,

— Slash (@Slash) April 5, 2012

Robby Takac of the Goo Goo Dolls:

RIP Jim Marshall - Creator of the Marshall Amp - The man responsible for that glorious ringing sound that is the soundtrack of my life !

— Robby Takac (@RobbyTakac) April 5, 2012

Tom Morello of Rage Against the Machine and Audioslave:

Amp stolen in ‘88.The store hadda Marshall vs latest solidstate fancy one.Flipped a coin.Changed my sound & my life.RIP Jim Marshall &thanks

— Tom Morello (@tmorello) April 6, 2012