Polish-Italian Electronic and sound engineer. Ketoff became the chief sound technician at RCA Italiana/Cinecittà film studios, Roma, in 1964 and the Fonolux post production company, between 1957 and 1965. Ketoff designed many devices for film music production including dynamic sound compressors and ring modulators, reverb chambers and plates, and established a new standard of sound post-production.
Commisioned to design and build the Electronic Music Studio at the American Academy in Rome, Ketoff finished his first synthesiser, the ‘Fonosynth’ in 1958 and then designed a much more compact voltage controlled performance ins trument called the Syn-ket in 1963 which was presented at the conference of the Audio Engineering Society (AES) in 1964.
Ketoff was a lifelong friend and collaborator with the Italian composer Gino Marinuzzi jr. Paolo Ketoff was married to Landa Ketoff, the well known musical critic for La Repubblica Newspaper.