Bob Cordell is an Electrical Engineer who has worked in telecommunications for many years, having started at Bell Labs in Holmdel, NJ in the Seventies. He was in management for 22 of those years. His activities have included integrated circuit design, optoelectronics and optical systems design and digital television encoding and decoding circuits. He holds 15 patents. Bob has been an audio hobbyist since his teens and has published numerous articles on power amplifier design and distortion measurement. He is a member of the Review Board of the Audio Engineering Society. His current interests include the design of MOSFET power amplifiers with error correction and the design of active loudspeakers. Bob lives in Holmdel, NJ and can be reached by email at