Education Director - iZotope in Cambridge, MA, Chief Engineer - M Works Mastering, and Professor at Berklee College of Music in Boston. He's mastered and produced more than 5000 recordings during the last 37 years.
Mastering, recording and mixing since 1983, he established M Works mastering studios in Cambridge, MA in 1991. Among the artists’ projects he has worked on are: James Taylor, David Bowie, Aerosmith, Kiri Te Kanawa, Aimee Mann, London Symphony, Miles Davis, Thelonius Monk, Pink Floyd, Bruce Springsteen and Nirvana. His project Invention and Alchemy received a Grammy Nomination in 2005.
Among many restoration projects credits include restoring audio for the Sherlock Holmes series - BBC TV, the first opera recording - Madame Butterfly ca 1912 for the New Zealand Archive, forensic work for the US gov’t, live concert recordings for the Bill Graham Archive, re-issues for Sun Records, Rounder Records and for major recording artists including David Bowie, Alison Krauss and The Shaggs.
Jonathan has conducted seminars around the world and presented with George Massenburg, Doug Sax and Bob Ludwig among others. In January 2017 he presented the keynote talk for the NAMM TEC Tracks. He's authored a book, ‘Audio Mastering: Essential Practices’ published by Hale Leonard/Berklee Press. With the iZotope team he authored and developed ‘Pro Audio Essentials’, an online ear training site that garnered a TEC award in early 2017.
Jonathan hosts ‘Headroom’, a podcast and online webcast series archived on iZotope’s website.