Theorysonic Codear in North America

The Theorysonic Codear was released in North American test markets on September 1, 1990 before a full launch on November 26 of that year. It was discontinued in 1997.

History in North America
The Codear was released to test marketing on September 1, 1990 in the and  areas. The first Codear sold in North America was purchased from a store in. It was released to further test marketing on September 16, 1990 in and  and on October 1, 1990 in  before a full nationwide launch on November 26, 1990. During test marketing, Theorysonic collected data, with a noticeable amount of customers preferring the Codear to it's closest competitors, the and.