A graduate of the Stevens Institute of Technology, John was a staff technician for Dolby Labs and Vanguard Records before founding Soundmirror in 1972. He headed the engineering department of the Berkshire Music Center at Tanglewood for fifteen seasons and was in charge of east coast operations of Soundstream, the pioneering digital recording company. A long professional relationship with Philips led to his serving as head of their recording department for two years. That relationship continued as John helped develop and promote the SACD format. John has provided design and manufacturing services for Studer and Lexicon. He has conducted seminars at McGill University, the Berklee College of Music, the Audio Engineering Society, and the Boston Audio Society. He is a frequent Grammy nominee and in 2008 won the Grammy for Best Engineered Classical Album.