Ampex ATR-100
The Ampex ATR-100 is a multitrack tape recorder, designed by Ampex Corporation, of Redwood City, California, United States. It was introduced at the Spring 1976 AES Conference in Los Angeles, and was geared towards the ultra high end studio market. The original versions were designed specifically as a stereo or quadraphonic (2 or 4 track) mixdown and mastering deck. It has gained a reputation in the recording industry as the most accurate analogue tape recorder ever to be produced.
The ATR-100 was designed by a three-person design team consisting of Robert P. Harshberger Jr. (motors and control system), Alastair M. Heaslett (signal electronics) and Roger Sleger (mechanical systems).