Early Sony Walkman models primarily played pre-recorded compact cassettes, but later versions supported CDs. As technology advanced, they were equipped with additional features such as FM radio, MP3 ...

This portable boombox comes with an analog radio, CD player, and Bluetooth capability, and is conveniently small and easy to use. Buy Sony Portable Bluetooth Digital Turner… 3.

4. Sony Stereo CD/Cassette Boombox This fully portable, 5-pound unit is a great option for moving from room to room indoors, or taking outside, with a battery life of up to 19 hours.

The Sony Walkman WM-AF59 combined auto-reverse cassette playback with an integrated AM/FM radio tuner. As a sports model, it offered waterproofing and was rated for 7 hours of playback using two ...

Well, yes. Sony is still at the front of mind for a number of "retro" audio formats including its iconic cassette players -- plus, the sales of the humble CD are again on the uptick.

STEVE INSKEEP, HOST: Before iPods, before iPhones, there was the Sony Walkman, a little cassette player that revolutionized music. NPR's Brian Jarboe has this appreciation as it turns 40.

Sony’s NetMD technology allowed computer software like SonicStage to transfer CDs, recordings, and files to a MiniDisc (before this, recording was a lot like creating a cassette).

Sony eventually went with models that could handle MP3s as well, but it was late to the game. In the new century, the company relinquished the portable music throne to Apple's iPod and iTunes.