Audio Devices, Inc.

[b]THIS IS NOT A LABEL. When found, credit only with the LCCN "Manufactured By" role.[/b]
Audio Devices made blank acetate discs under the trade name Audiodisc for home-cut recordings (such as the "V-Discs" popular during World War II), as well as lacquer blanks for the professional recording industry. When tape recorders entered the consumer market in the 1950s, Audio Devices also began manufacturing magnetic tape. After the invention of Muntz's 4-track cartridge Audio Devices made carts under the brand name "audiopak".

In 1968, and did a stock-swap reverse merger, with the resulting company named . After the Capitol merger, the tape division became , and continued making 4-track cartridges for broadcast use, and 8-track cartridges for consumers. Often, the brand name "audiopak" is molded into the plastic case, followed by the words [url=https://www.discogs.com/The-Beatles-Sgt-Peppers-Lonely-Hearts-Club-Band/release/2965541#images/12394213]Audio Devices, Inc. Made in U.S.A.[/url]. Later cartridges retain the "audiopak" logo but say [url=https://www.discogs.com/Eagles-Their-Greatest-Hits-1971-1975/release/9027227#images/24671712]Made by Capitol Magnetic Products[/url].