Jennings, an Audio Professional, worked for years as a guitar player and singer, in the studio and on the road. He started out on the east coast and moved to Hollywood in 1990, playing the Los Angeles club circuit and spending time in studios tracking with various bands. In 1992 he became the VP of Sales & Marketing for a Los Angeles based data and communications firm and playing music in the evenings. In 1996 he teamed with David Royer to start DVA - a new pro audio company, which didn't last long due to production problems. In 1998, Jennings and Royer teamed up with Rick Perrotta and Rafael Valentine to form Royer Labs, a California based company dedicated to the development and production of high quality ribbon microphones and transducer elements. Jennings serves as VP of Sales and Marketing for Royer Labs. Jennings was in the studio with Ray Charles, Norah Jones and Billy Preston during the recording of Genius Loves Company in 2003.