How it started
Acquisition history of dbx
dbx manufactured only signal processing equipment until bought by BSR in 1979. From 1979 until 1989, the brand name was also used for consumer audio equipment such as speakers, CD players and amplifiers. In 1989, the short-lived Carillon Corporation bought dbx. Sanju Chiba of ELPJ acquired the dbx division of BSR and after virtually shutting down, the professional products division of dbx was sold off as a separate business to Orban AKG which in turn was bought by Harman International. The OEM business was sold to THAT Corporation founded by members of dbx's engineering group. dbx once held key patents for MTS, the U.S. standard for stereo analog television transmission, but in 1994 it sold those patents to THAT Corporation.
In the present, they sell professional digital signal processors, equalizers, compressors, crossovers, subharmonic synthesizers, and many similar products.
From Wikipedia’s article on Dbx, Inc., shared under CC BY-SA 4.0.2