Bellari is part of Rolls Corporation,a company specializing in audio electronics manufacturing. Products include signal processors, amplifiers, mixers, signal sources, and interface accessories. Rolls began in 1989 when Marilyn and David O. Di Francesco introduced the HR100 amplifier, the HR11c Microphone Processor, the HR6x mixers, and the HR210 equalizer at the New York AES Convention. Bellari was born in the summer of 1995 with the introduction of the RP220 Dual Tube Mic Preamp. Bellari employs people who have a concern for quality workmanship as well as an eye and ear for no-nonsense, useful products.