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teenage engineering OB–4 portable bluetooth wireless stereo speaker with fm-radio and long-lasting, rechargeable 40 hour battery life, black

4.7 4.7 out of 5 stars 33 ratings

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Purchase options and add-ons

Brand teenage engineering
Model Name OB–4
Speaker Type Bookshelf
Connectivity Technology Bluetooth
Special Feature Portable

About this item

  • high quality audio – listen to crystal clear sound through two 4'' bass drivers and a pair of neodymium tweeters, a flow-optimised bass reflex duct delivers deep natural bass. all together you get 38 watts per channel — that's around 100 decibels of incredible sounding stereo that fills the entire room.
  • versatile connectivity – in addition to fm radio and line-in (aux), OB–4 supports both high-definition wireless bluetooth and bluetooth low energy (ble). it also works with ortho remote for wireless volume control or use the orthoplay app, available on both iOS and android. compatible with all of your favorite music streaming services, including spotify and apple music.
  • 72 hours of battery life – a long lasting battery gives you 72 hours of normal radio listening for a week without charging. the high capacity lipo battery delivers about 8 hours of noise at max volume, or an average of 40 hours on a single charge.
  • magic user experience – OB–4 memorizes everything you play on an endless looping tape. rewind the radio and remix anything. use your fingers to grab, spin and interact with the sound with the digital-motion controlled volume knob and tape reel. disk mode is where new and experimental features are stored for OB–4. for now, there are three functions on the disk; ambient, karma and metronome.
  • ultimate portability – the handle makes it easy to carry OB–4 anywhere, and can even be used as a stand. place the included smart spiral antenna antenna in the handle when you need an extra fm boost. if that's not enough, you can find custom fit OB–4 carry bags and carry straps available in a variety of colors.
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$549.00
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Product Description

Teenage Engineering OB-4 Magic Radio Portable Stereo Speaker with Built-in Loop Recorder
Teenage Engineering OB-4 Magic Radio Portable Stereo Speaker with Built-in Loop Recorder

All-in-One Radio, Speaker, and Instrument

The teenage engineering OB-4 is a unique speaker that can record, rewind, and loop anything you play through it. It's more than just a simple boom box. Dubbed as the "Magic Radio," OB-4 continuously memorizes everything you listen to on an endless looping tape. You can rewind, time-bend, or loop a radio episode with a flick of your fingertips — just like magic!

Aside from the Bluetooth speaker and FM radio functions, you can explore the experimental features of OB-4's disk mode. The disk mode allows you to play 30 musical mantras, zone out to drone-generated radio snippets, and use the built-in metronome for high-definition stereo recording.

Technical Specifications:

  • 2 × 38W Ultra High-Efficiency Class D Amplifier
  • 52-25000 Hz Frequency Range
  • 3.5 kHz Active Crossover Frequency
  • Stereo 2 + 2 Configuration
  • Built-In AC 110-240V, 50-60 Hz Power Supply
  • Up to 8-72 Hours Battery Life
  • Made of Amorphous Polymer Glass Fiber, Reinforced PC & Milled Aluminum
  • Main Power Cable & Antenna Included

Teenage Engineering OB-4 Magic Radio Portable Stereo Speaker with Built-in Loop Recorder

Teenage Engineering OB-4 Magic Radio Portable Stereo Speaker with Built-in Loop Recorder

Teenage Engineering OB-4 Magic Radio Portable Stereo Speaker with Built-in Loop Recorder

HD Speakers with Crystal-Clear "Open" Sound

The OB-4 (Ortho Book 4) is designed to sound fantastic anywhere. It boasts high-efficiency ferrofluid-cooled tweeters and long-throw high-power woofers. The four tailor-engineered neodymium drivers produce a natural stereo sound like no other.

Wired & Wireless Connectivity

Listen to music from your phone or MP3 player using the 3.5mm stereo line input or Bluetooth connectivity. OB-4 supports Bluetooth 5.0 LE and AAC wireless audio codec. Easily sync your Android or iOS device and groove to high-quality audio instantly.

Integrated Smart Antenna

Listen to any FM radio station straight through the OB-4. The unit works at 52Hz – 25000Hz frequency range. The spiral antenna neatly integrates into the handle-stand. You can use the extended FM antenna if you require a stronger radio signal.

Teenage Engineering OB-4 Magic Radio Portable Stereo Speaker with Built-in Loop Recorder

Teenage Engineering OB-4 Magic Radio Portable Stereo Speaker with Built-in Loop Recorder

Teenage Engineering OB-4 Magic Radio Portable Stereo Speaker with Built-in Loop Recorder

Teenage Engineering OB-4 Magic Radio Portable Stereo Speaker with Built-in Loop Recorder

Loop an Episode

You can loop a radio show played through OB-4. The media-instrument can record up to 2 hours of music playback. Never miss a thing again.

The Magic Radio also features a digital Tape Transport function that allows you to rewind, slow down, and fast forward songs.

Never Miss a Beat

Activate Disk Mode to access the built-in Metronome. You can adjust the tempo from 1-800 BPM.

OB-4 can also generate an endless ambient track based on parts of the FM radio using the Ambient function.

The last function on Disk Mode is Karma. It offers a collection of mantra sounds.

Control Wirelessly

The companion orthoplay app enables you to configure the Magic Radio's settings or upgrade its firmware remotely.

You can also get teenage engineering's Ortho Remote to wirelessly adjust OB-4's volume level, playlist, or pause music at up to 20 meters distance.

Teenage Engineering OB-4 Magic Radio Portable Stereo Speaker with Built-in Loop Recorder
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Customer Reviews
4.2 out of 5 stars
113
4.7 out of 5 stars
33
4.4 out of 5 stars
20
Type Headphones with Built-In and Detachable Microphone Wireless HIFI Loudspeaker with Radio 6-Channel Stereo Mixer
Connectivity 3.5mm TRRS Plug 3.5mm Stereo Line In 6 × 3.5mm Audio In, 3.5mm AUX Out, 3.5mm Cue Out, 3.5mm Main Out
Bluetooth 5 LE, Bluetooth Classic (AAC) USB-C
FM Radio Bluetooth LE Radio Interface
Other Features 30mm Dynamic Drivers 2 x 38W Ultra High Amplifier 24-bit/48kHz USB Interface
32 Ohm Impedance Neodymium Tweeter and Woofer 10 kOhm Impedance
20Hz - 20kHz Speaker Frequency Response 52Hz - 25kHz Frequency Response USB Audio / MIDI Interface Capability
100Hz - 10kHz Mic Frequency Response 3.5kHz Active Crossover Frequency 0dB - 42dB Analog Gain
92dB Max SPL @ 1m Stereo Configuration Compatible with iPhone
8-72 Hours Battery Life 8 Hours Battery Life

What's in the box

  • US power adapter
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    Product information

    Warranty & Support

    Product Warranty: For warranty information about this product, please click here

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    teenage engineering OB–4 Portable Bluetooth Wireless Stereo Speaker with fm-Radio and Long-Lasting, Rechargeable 40 Hour Battery Life, Black


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    Customer reviews

    4.7 out of 5 stars
    4.7 out of 5
    33 global ratings

    Customers say

    Customers like the sound quality, quality and functionality of the speakers. For example, they mention it has the best sound in a portable bluetooth speaker, it's sturdy and has a premium quality feel. That said some complain about the value of the product.

    AI-generated from the text of customer reviews

    12 customers mention12 positive0 negative

    Customers are satisfied with the sound quality of the speaker. For example, they mention it has great sound, incredible volume, and a whimsical design. Some say it's a superb bluetooth speaker.

    "...entire package with the spinning knobs and the dials and the lovely sound quality and portability that make it what it is...." Read more

    "...example how they designed the handle to hold extra antenna = nice touches everywhere. Very pleased with this item!!..." Read more

    "But the sound is awesome. The features make this device a joy." Read more

    "...Its loudness and clarity for such a portable unit is unmatched. The "remix" capability is fun." Read more

    7 customers mention7 positive0 negative

    Customers are satisfied with the quality of the speakers. They mention it's a high-quality, whimsical product that you don't need but will love. It's sturdy and has a premium quality feel. Customers also say that it works flawlessly.

    "...Sound quality and build quality are both excellent...." Read more

    "...What a perfect package of utility, volume, great sound, and fun!! Perfect product - for example how they designed the handle to hold extra antenna..." Read more

    "...to return it, but I'm going to keep it because the sound is really, really good...." Read more

    "...would be good for parties, and is a sturdy device. but high value, and small. easy to steal so dont set it down!" Read more

    5 customers mention5 positive0 negative

    Customers find the speakers' utility to be awesome, perfect, and fun. They also appreciate the nice and unexpected functions. Overall, customers say the speakers are fantastic and encourage an active approach to music.

    "...it's absolutely fantastic - it definitely encourages an active approach to listening to music...." Read more

    "...What a perfect package of utility, volume, great sound, and fun!!..." Read more

    "But the sound is awesome. The features make this device a joy." Read more

    "...I find the features nifty, but not really useful...." Read more

    3 customers mention3 positive0 negative

    Customers find the speakers fun with the looper, ambient features, and remix capability.

    "...What a perfect package of utility, volume, great sound, and fun!!..." Read more

    "...The "remix" capability is fun." Read more

    "...The ambient features and looper are great fun, Im loving it." Read more

    5 customers mention0 positive5 negative

    Customers are dissatisfied with the value of the speakers. They mention that it is very expensive.

    "Look, nobody needs this thing. It's very expensive.But if you're here reading reviews, you might understand the appeal...." Read more

    "...would be good for parties, and is a sturdy device. but high value, and small. easy to steal so dont set it down!" Read more

    "Expensive, but a great device. No issues and so far has worked flawlessly.Buy it if it fits your decor." Read more

    "A little bit expensive..." Read more

    Awesome sound
    5 Stars
    Awesome sound
    I am a professional recording and mixing engineer for > 30 yrs….. this thing sounds awesome!! What a perfect package of utility, volume, great sound, and fun!! Perfect product - for example how they designed the handle to hold extra antenna = nice touches everywhere. Very pleased with this item!! I can’t wait for updates around “disk” mode ;)
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    Top reviews from the United States

    Reviewed in the United States on May 9, 2022
    Color: blackVerified Purchase
    12 people found this helpful
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    Reviewed in the United States on July 10, 2023
    Color: blackVerified Purchase
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    5.0 out of 5 stars Awesome sound
    Reviewed in the United States on July 10, 2023
    I am a professional recording and mixing engineer for > 30 yrs….. this thing sounds awesome!! What a perfect package of utility, volume, great sound, and fun!! Perfect product - for example how they designed the handle to hold extra antenna = nice touches everywhere. Very pleased with this item!! I can’t wait for updates around “disk” mode ;)
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    2 people found this helpful
    Report
    Reviewed in the United States on August 5, 2023
    Color: blackVerified Purchase
    Reviewed in the United States on March 31, 2023
    Color: blackVerified Purchase
    One person found this helpful
    Report
    Reviewed in the United States on June 10, 2022
    Color: blackVerified Purchase
    5 people found this helpful
    Report
    Reviewed in the United States on July 2, 2023
    Color: blackVerified Purchase
    One person found this helpful
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    Reviewed in the United States on December 28, 2022
    Color: blackVerified Purchase
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    5.0 out of 5 stars Best purchase ever
    Reviewed in the United States on December 28, 2022
    Honestly the best purchase I’ve ever made. I use it every single day. My friends play with it, I play with it, it’s awesome. And once I got over the price tag, which seems high, I started to add to it. It really is a phenomenal speaker. It has become and will remain a staple in my household.
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    5 people found this helpful
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    Reviewed in the United States on August 9, 2021
    Color: blackVerified Purchase
    3 people found this helpful
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    Top reviews from other countries

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    Alan
    5.0 out of 5 stars es divertido
    Reviewed in Mexico on January 27, 2024
    Color: blackVerified Purchase
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    Alan
    5.0 out of 5 stars es divertido
    Reviewed in Mexico on January 27, 2024
    Es muy divertido de usar y se escucha muy bien
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    One person found this helpful
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    Luis Rogelio Ortiz Rojas
    2.0 out of 5 stars Esta increíble, pero venía sin instructivo y sin cable a corriente
    Reviewed in Mexico on March 24, 2022
    Color: blackVerified Purchase
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    Luis Rogelio Ortiz Rojas
    2.0 out of 5 stars Esta increíble, pero venía sin instructivo y sin cable a corriente
    Reviewed in Mexico on March 24, 2022
    El producto está súper bonito, pero venía sin instructivo y sin cable a corriente.
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