is a Japan

Japan

Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

ese manufacturer of amateur radio

Amateur radio

Amateur radio is the use of designated radio frequency spectrum for purposes of private recreation, non-commercial exchange of messages, wireless experimentation, self-training, and emergency communication...

 as well as Hi-Fidelity

High fidelity

High fidelity—or hi-fi—reproduction is a term used by home stereo listeners and home audio enthusiasts to refer to high-quality reproduction of sound or images, to distinguish it from the poorer quality sound produced by inexpensive audio equipment...

 and portable audio equipment.
The company first started in 1946 as the Kasuga Radio Co. Ltd. In Komagane City, Nagano Prefecture

Nagano Prefecture

is a prefecture of Japan located in the Chūbu region of the island of Honshū. The capital is the city of Nagano.- History :Nagano was formerly known as the province of Shinano...

, Japan. In 1960 the firm was renamed "Trio Corporation". 1963 saw the foundation of the first overseas office of Trio, in Los Angeles

Los Ángeles

Los Ángeles is the capital of the province of Biobío, in the commune of the same name, in Region VIII , in the center-south of Chile. It is located between the Laja and Biobío rivers. The population is 123,445 inhabitants...

, California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

, USA.

In the early 1960s, The LaFayette Radio Company

LaFayette Radio

Lafayette Radio Electronics Corporation was a radio manufacturer and retailer based in Syosset, New York. The company sold radio sets, amateur radio equipment, citizen's band radios, and other communications equipment, as well as electronic components and tools through retail outlets as well as...

 rebranded and sold Trio's products, unfortunately focusing on the doomed 23-channel CB radio

Citizens' band radio

Citizens' Band radio is, in many countries, a system of short-distance radio communications between individuals on a selection of 40 channels within the 27-MHz band. Citizens' Band is distinct from the FRS, GMRS, MURS and amateur radio...

.

Their component HiFi reaches back to the all valve era, with their stereo receiver-amplifiers
often having 2 tuning dials and 2 separate tuners, some of which would tune in multiple carrier
AM stereo broadcasts.

Innovation at the company was very significant during this period.