Andrew Flanagan, reporting for Billboard:
Joseph Grado, the Brooklyn-based watchmaker-turned-audio engineer who founded the well-respected headphone manufacturer Grado Laboratories in 1953 in the space previously occupied by the Grade Fruit Shop, died in his sleep this past Friday (Feb. 6) in South Carolina, aged 90.
I found out about his passing while wearing a pair of headphones that wouldn't exist without him. Grado made beautiful and beautiful-sounding headphones.
Watch a great (and short) documentary about the Grado family business: