In today’s fast-paced digital world, where wireless technology reigns supreme, there’s one steadfast connection that has stood the test of time—the audio jack.

Whether it’s for listening to music on our smartphones, plugging in headphones, or connecting to external speakers, the audio jack remains a simple yet essential part of our daily lives.

The Origins of the Audio Jack

The audio jack, also known as the headphone jack or the 3.5mm jack, has its roots in the late 19th century.

It was invented by John C. Koss, founder of Koss Corporation, in 1958.

However, it wasn’t until the Walkman era in the 1980s that the audio jack became widely popular, allowing people to listen to their favorite music on portable cassette players and later on, portable CD players.

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