He passed away at his home in Paris, France on 7 June (14) following a fall, according to his daughter, Kirby Veevers.
Douglas worked on Art Blakey and the Jazz Messengers' Three Blind Mice albums and was credited with bringing trumpeter Kenny Dorham into the studio for his 1962 classic, Matador.
He also worked with Ellington on 1962's Money Jungle, which featured bassist Charles Mingus and drummer Max Roach, and was known for his other collaborations with guitarist John MCLaughlin and the group the Last Poets.
However, the producer, who later established his own Douglas Records label, is perhaps most closely associated with Hendrix, acquiring the rights to produce the rock icon's previously unreleased tracks four years after his death in 1970.
Douglas is frequently credited with helping to keep his legacy alive, but the posthumous Hendrix work on albums like Crash Landing, Midnight Lightning and Voodoo Soup was not without controversy, with some devotees blasting the producer after it was discovered that he would often bring in new session musicians to dub over Hendrix's original band.