A recorder built for one man’s ears

In 1978, Sony honorary chairman and co-founder Masaru Ibuka kept hauling the company’s bulky TC-D5 tape recorder onto long-haul flights just so he could listen to opera in the air. He wanted something lighter, so he asked deputy Norio Ohga to build him a playback-only stereo version. Ohga handed the job to engineer Kozo Ohsone, who stripped down Sony’s existing Pressman recorder into a headphone-only player with no built-in speaker. Ibuka loved the prototype. Most of the rest of Sony did not.

“Even the engineers weren’t impressed”

A cassette player that couldn’t record and had no speaker sounded, to a lot of people inside Sony, like a product with the single most useful feature of a cassette player surgically removed. Smithsonian magazine’s retrospective on the launch notes plainly that “even the engineers inside Sony weren’t impressed” by the stripped-down device. Company forecasters weren’t any warmer on it: internal projections reportedly pegged demand at only about 5,000 units a month.

Ibuka’s one-line rebuttal

When the pushback reached Ibuka directly, he answered the skeptics with a single question: “Don’t you think a stereo cassette player that you can listen to while walking around is a good idea?” It worked well enough that co-founder Akio Morita took the project from there, telling engineers to build something that would “satisfy those young people who want to listen to music all day.”

A name nobody overseas wanted either

Even the name became its own small civil war. Sony’s Japan office wanted to call the device the Walkman, and overseas sales divisions objected. The same player shipped as “Soundabout” in the United States, “Freestyle” in Australia and Sweden, and “Stowaway” in the United Kingdom, while Japan kept Ibuka’s original name.

Sold out by summer’s end

Sony’s institutional caution showed up in the production numbers too. The company built just 30,000 units for the initial July 1979 run, and sales crawled for the first several weeks. What actually turned the tide wasn’t an ad campaign. Sony sent staff into Tokyo’s Yoyogi Park to hand strangers a set of headphones and let them walk around listening. By August, the entire first run was gone.

None of that early resistance was really about music, in the end. It was about a company that had built its entire identity on recording technology being asked to bet on a device that could only ever play sound back. Ibuka’s insistence wasn’t a hunch about headphones. It was a bet that the smaller idea was the one people actually wanted strapped to their belt, and close to half a century of imitators later, nobody’s proven him wrong.