Teenage Engineering’s new OB-4 is a radio, instrument, and speaker all in one

The synth wizards at Swedish electronics maker Teenage Engineering just introduced perhaps their most perplexing and intriguing product yet: a rewindable radio and speaker system called the OB-4. The device, which is available now in black or red for $599, is as sleek and well-designed as the company’s standard synth products, but it packs a whole lot of interesting tech under the hood.
The core feature of the OB-4 is its manual rewind dial paired with an integrated motor, which the company says will let you rewind back to anything you’ve listened to in the past two hours on a rolling basis — whether it was live radio, a Spotify playlist played via Bluetooth, or even an instrument plugged in, like one of Teenage Engineering’s synths. From there, you can replay what you’ve heard or mess around with the audio itself by time stretching and looping it.

“Have you ever wished you could instantly rewind when listening to the radio, to hear the title of the song just played? OB–4 continuously memorises everything you listen to on an endless looping tape,” the company writes on the OB-4 product page. “Rewind, time-stretch and loop at the flick of your fingertips. on purpose or by accident. instant rewind on radio is just one of the OB-4’s magic tricks.”
[embedded content]
What might you actually do with this? It’s not entirely clear right now. The company has only a short teaser video showcasing the OB-4, and it doesn’t include any real-time demonstrations of the rewind tech.
That said, it’s not hard to imagine some pretty interesting use cases, like grabbing a sample from an FM radio cast and integrating it into a mix you’re putting together on a Teenage Engineering OP-1 synth. The company says the device supports the newest Bluetooth standards, so down the line the OB-4 will be able to connect wirelessly to its newer OP-Z synthesizer, too. There’s also an add-on called “disk mode,” which Teenage Engineering says will include various experimental features starting with an ambient player and a metronome.
“If you skip the traditional inputs like line in, Bluetooth and FM radio, you end up in disk mode,” the product page reads. “This is where we will continuously develop new experimental features for the OB–4. It’s our public research space, where we allow ourselves to explore and prototype everything that this media-instrument, as we call it, can become.”

Beyond that, it’s clear Teenage Engineering sees the device’s function partly as a very nice-looking but pricey Bluetooth speaker. The company says you can use it to just relax and listen to the radio or your favorite music, and it has a carrying handle for bringing it to a friend’s place or a park hangout. The handle also doubles as a stand when folded appropriately, letting you prop it up to better access its physical buttons and dials. It has an average battery life of 40 hours of listening on a single charge, and there’s an in-depth breakdown of the actual speaker specs on the product page , for those who’re interested.
It’ll be interesting to see more of what this device can do when it’s in the hands of the crowd of producers and music aficionados that can really make magic when they use Teenage Engineering synths and similar devices. For right now, though, it’s still a really well-designed radio, if not the most expensive one you might have ever seen.
The synth wizards at Swedish electronics maker Teenage Engineering just introduced perhaps their most perplexing and intriguing product yet: a rewindable radio and speaker system called the OB-4. The device, which is available now in black or red for $599, is as sleek and well-designed as the company’s standard synth…
Recent Posts
- Meta’s AI chatbot will soon have a standalone app
- CRKD teamed up with Gibson to make new guitar controllers
- Amazon CEO says ‘beautiful’ new Alexa hardware is coming this fall
- Apple will let parents share their kids’ ages to limit app access
- Perplexity’s voice mode gets a futuristic makeover on your iPhone
Archives
- February 2025
- January 2025
- December 2024
- November 2024
- October 2024
- September 2024
- August 2024
- July 2024
- June 2024
- May 2024
- April 2024
- March 2024
- February 2024
- January 2024
- December 2023
- November 2023
- October 2023
- September 2023
- August 2023
- July 2023
- June 2023
- May 2023
- April 2023
- March 2023
- February 2023
- January 2023
- December 2022
- November 2022
- October 2022
- September 2022
- August 2022
- July 2022
- June 2022
- May 2022
- April 2022
- March 2022
- February 2022
- January 2022
- December 2021
- November 2021
- October 2021
- September 2021
- August 2021
- July 2021
- June 2021
- May 2021
- April 2021
- March 2021
- February 2021
- January 2021
- December 2020
- November 2020
- October 2020
- September 2020
- August 2020
- July 2020
- June 2020
- May 2020
- April 2020
- March 2020
- February 2020
- January 2020
- December 2019
- November 2019
- September 2018
- October 2017
- December 2011
- August 2010