With worldwide concert mixing and sound designer experience for numerous performing artists and major special events, David Scheirman began his sound reinforcement career first as a truck and bus driver, then a touring system technician and eventually a concert sound mixer. Since then, he has held positions with P.A. rental firms, an installed system integrator, an electro-acoustical measurement laboratory, a computer-control system developer, a networking technology R&D firm and pro audio equipment manufacturers. Executive education has included programs at M.I.T, Stanford University and Caltech. He is a past president of the Audio Engineering Society and is global director, concert and rental business for Bose Professional.