John Suhr got his start at Rudy's Music Stop, one of the famous music stores on Manhattan's 48th Street. As the store's repairman, he and Rudy Pensa built and sold electric guitars and basses under the Pensa-Suhr label. These were made for many famous clients - Clapton, Frampton, etc. - but perhaps the guy who played them most and brought the most visibility to the brand was Mark Knopfler.
Suhr left NYC in 1991 and started working with legendary rack builder Bob Bradshaw at Custom Audio Electronics in southern California. He helped design some of the company's amplifiers and preamps, and then in 1995 left CAE to work for Fender as a Senior Master Builder in Fender's Custom Shop.
In 1997 he left Fender and he and a former Fender contractor - Steve Smith - co-founded JS Technologies, where they started making high-end electric guitars, and later amplifiers and effects pedals. All Suhr pickups are made in-house at Suhr's facility in Lake Elsinore, California.