[3][4] Prior to manufacturing hearing aids, Dahlberg's company produced pillow radios for hospitals and motels.

[5] In the early 1950s, Dahlberg Electronics began producing hearing aids that utilized the newly invented transistor technology – beginning with "hybrid" hearing aids that used transistors and vacuum tubes, and then releasing an all-transistor model in 1953.

[6] In 1955, they introduced the first so-called "in-the-ear" hearing aid, the D-10 Magic Ear – which concealed all electronic components in a shell snapped onto an earmold and weighed 1/2 ounce, including battery, three-transistor amplifier, microphone, and receiver.

In 1988, the company debuted the Miracle-Ear Dolphin, the first programmable hearing aid on the market.

[10][11] Following university testing in 1997, the United States Food and Drug Administration (FDA) approved claims on Miracle-Ear's Sharp Plus circuitry that the Miracle-Ear devices improved hearing in the presence of background noise.