COSTA MESA, Calif. -- Wouldn't it be great if Jimi Hendrix used one of my guitar amps, thought Pat Quilter. It was the mid-'60s when a musician friend complained that guitar amplifiers cost five times ...

The gig: Patrick Quilter, 64, is the founder and senior designer at QSC Audio Products, whose sound systems include portable amplifiers and loudspeakers as well as complex networks used by theme parks ...

Wouldn’t it be great if Jimi Hendrix used one of my guitar amps, thought Pat Quilter. It was the mid-’60s when a musician friend complained that guitar amplifiers cost five times more than the $250 he ...

Forty-six years later, that amp's still running. [ Quilter was living at home, and home was on the El Toro Marine base, where his dad, Charles Quilter, was a two-star general in charge of the 3rd ...