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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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Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
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Return this item for free
Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
Learn more about free returns.- Go to your orders and start the return
- Select the return method
- Ship it!
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.
Frequently bought together
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From the brand
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The Beauty of Evolution
teenage engineering creates highly acclaimed products for people who love sound, music, and design.
We develop the alternative future of consumer electronics — each invention driven by need, and built to last.
teenage engineering is the creator of OP-1 portable synthesizer / pocket operators / OP-Z multimedia synth and sequencer / computer-1 case / OB-4 magic radio / TX-6 field mixer / and much more.
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Where can I register my unit?
Please visit this page to register your product: teenage.engineering/register
This will ensure you get all the latest updates and support for your units.
How can I reach teenage engineering education?
Please visit teenage.engineering/ems to learn more about teenage engineering education activities and the teenage engineering electronic music school.
You can also join our Discord server, connect with a mentor, or visit the education YouTube channel for more content.
Feel free to join: discord.gg/xZ6n8pCSnQ
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Product Description
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
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HD Speakers with Crystal-Clear "Open" SoundThe 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 ConnectivityListen 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 AntennaListen 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. |
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Loop an EpisodeYou 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 BeatActivate 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 WirelesslyThe 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. |
M-1 Personal Monitor | OB-4 Magic Radio | TX-6 Field Mixer | |
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Customer Reviews |
4.2 out of 5 stars
113
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4.7 out of 5 stars
33
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4.4 out of 5 stars
20
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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
Looking for specific info?
Product information
Product Dimensions | 12.79 x 2.99 x 9.84 inches |
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Item Weight | 5.39 pounds |
ASIN | B08WR5VHYB |
Item model number | TE011AS |
Customer Reviews |
4.7 out of 5 stars |
Best Sellers Rank | #26,100 in Electronics (See Top 100 in Electronics) #806 in Portable Bluetooth Speakers |
Date First Available | February 16, 2021 |
Manufacturer | teenage engineering |
Country of Origin | Czech Republic |
Input Voltage | 240 Volts |
Speakers Maximum Output Power | 38 Watts |
Item Weight | 2.45 Kilograms |
Charging Time | 40 Hours |
Number Of Items | 1 |
Warranty & Support
Feedback
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers 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
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
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
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
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
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
Reviews with images
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Top reviews
Top reviews from the United States
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But if you're here reading reviews, you might understand the appeal. This lets you interact with music in a way that other speakers don't. It's not quite an instrument, but it's a lot more than a $650 bluetooth speaker. And if you're interested in messing around with time, loops, weird ambient effects, etc., it's absolutely fantastic - it definitely encourages an active approach to listening to music.
Yes, you can do all of these things with other cheaper setups, but it's the entire package with the spinning knobs and the dials and the lovely sound quality and portability that make it what it is.
Sound quality and build quality are both excellent. So the big question to ask yourself is will the quirks and whimsy of this thing justify the price, and that's totally a personal decision. If you think it will, then go for it. There's nothing like it. I'm really glad I supported this kind of weirdo product design, even at this price point.
If you don't think the features and quality are worth what they're asking, don't buy it. You likely won't have your mind changed when it's in your hands. It is exactly what it's advertised to be.
Over Memorial Day weekend, we put it in a triangular (not a right triangle) nook, and it was almost night-club loud, at least for the 8 of us at a country house.
First of all, this thing is a BOOM BOX.
I cannot really play any of my black metal / heavy metal / anything metal louder than 35% in my apartment before it exceeds all over devices sound.
You can feel the music at all sound levels. Truly. Which i find to be very unique.
And this is much more than a speaker, and if you dont read the possiblities of what this does before hand, you will be a bit sad when you consider the price to speaker. but this is an instrument.
full fledged, with 2 hours of playback on the tape, mixxing up some of the craziest sounds from just random radio snipets / song snipets, along with scratching, speeding up, slowing down, changing pitch, looping, etc. you have to take some time to learn all these functions as you have 4 Human interface inputs on the device with about 16 or more actions associated with them, being a combination of a button held here and dial moved there, two buttons, etc.
comes with good documentation on all the use-case.
oh and this battery is the best of any bluetooth speaker ive ever seen with the quality of sound putting out.
i have left it on for two days playing music off and on while always atleast connected to BT before it tends to show me red on the light and that means charge it.
would be good for parties, and is a sturdy device. but high value, and small. easy to steal so dont set it down!
Top reviews from other countries
Reviewed in Mexico on January 27, 2024
Reviewed in Mexico on March 24, 2022