teenage engineering The Magic Radio Overview
 
  
  
   
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1Description
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2Rolling Two-Hour Recording
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3Natural Sound
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4Up to 72-Hour Battery Life
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5The Wireless Part
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6Smart Antenna
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7Motorized User Interface
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8Turn Your Mind On with Disk Mode
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9The Handle-Stand
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10Additional Features
 
  
 
  
   
    Enjoy your audio nearly anywhere with the matte black Teenage Engineering Magic Radio OB-4 Portable Bluetooth Radio. It's equipped with two woofers and two tweeters powered by two 38W Class-D amplifiers for efficient power. Bluetooth technology is onboard, so you can stream your favorite audio from compatible devices. A 3.5mm stereo input lets you connect legacy audio sources. The built-in rechargeable battery lasts up to 72 hours on a single charge or up to eight hours at maximum volume.
    
   
  
 
  
   
    
     Rolling Two-Hour Recording
     
      
       Have you ever wished you could instantly rewind when listening to the radio to hear the title of the song just played? The OB-4 continuously memorizes everything you listen to on two-hour looping tape. Rewind, time-bend, 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.
      
      
     
    
   
    
     Natural Sound
     
      
       Four tailor-engineered speaker elements deliver pure quality sound and a stereo field that fills the entire room. A flow-optimized bass reflex duct delivers deep, natural bass.
      
      
     
    
   
    
     Up to 72-Hour Battery Life
     
      
       How about normal radio listening for a week without charging? The high-capacity LiPo battery delivers about eight hours of noise at max volume, or an average of 40 hours on a single charge.
      
      
     
    
   
    
     The Wireless Part
     
      
       The OB-4 hardware platform supports both high-definition Bluetooth classic and Bluetooth Low Energy standards. Works with the ortho remote for wireless volume control.
      
      
     
    
   
    
     Smart Antenna
     
      
       Teenage Engineering has spent years fiddling with the antenna, so you won't have to. And for those tricky listening places, they've included a fine-tuned smart spiral antenna that neatly integrates into the handle.
      
      
     
    
   
    
     Motorized User Interface
     
      
       Use your fingers to grab, spin, and interact with the sound with the digital motion-controlled volume knob and tape reel. Teenage Engineering calls it the next level of user experience. It features a brushless motor, hall-effect sensor, and intelligent motor control algorithm.
      
      
     
    
   
    
     Turn Your Mind On with Disk Mode
     
      
       If you skip the traditional inputs like line in, Bluetooth, and FM radio, you end up in disk mode. This is where Teenage Engineering will continuously develop new experimental features for the OB-4. It's their public research space, where they allow themselves to explore and prototype everything that this media-instrument, as they like to call it, can become.
       
       For now, there are three functions on the disk: ambient, karma, and metronome:
       
        - Ambient lets you zone out to a drone generated by snippets of a radio broadcast.
- Metronome provides high-def stereo recording at one beat per minute,up to 800 BPM.
- Karma is a 30-in-1 musical mantra box�your spiritual companion.
 
       
     
    
   
    
     The Handle-Stand
     
      
       Designed to be played outdoors in public spaces and at high volume or carried on one shoulder with the speaker elements facing the head. It is assumed that passers-by share the same musical taste. Or why not give it a home in your kitchen? With any luck, the iconic handle makes it a breeze to carry anywhere, and can even be used as a stand for a more relaxed listening position.
      
      
     
    
   
    
     Additional Features
     
      
       
        - Flow-optimized bass reflex duct and semi-unified chamber
- Amorphous polymer glass fiber-reinforced polycarbonate and milled aluminum
- Fine pitch tweeter grille, gel-dampened handle, custom direct drive volume knob, and tape dial
- 92 dB unsupported wideband max SPL at 1m stereo configuration
- 104 dB SPL supported bass at 1m
- 3.5 kHz active crossover frequency
- Stereo configuration
- High-efficiency ferrofluid-cooled neodymium tweeter driver
- Long-throw, high power capacity neodymium woofer driver
- 2.8 V p-p input sensitivity at 0 dBFS
 
      
     
    
   
  
 
  
   In the Box
   
    - teenage engineering OB-4 Magic Radio Portable Bluetooth Radio and Speaker (Matte Black)
- Antenna
- Main Power Cable
- Limited 1-Year Warranty
 
  
 
 
 
  
  
   
    
     Table of Contents
    
    
     - Description
- Rolling Two-Hour Recording
- Natural Sound
- Up to 72-Hour Battery Life
- The Wireless Part
- Smart Antenna
- Motorized User Interface
- Turn Your Mind On with Disk Mode
- The Handle-Stand
- Additional Features
 
   
  
 
 
  
   
    
     
teenage engineering The Magic Radio Specs
    
    
     
      Speaker System
     
     
      
       
        | Power Output | 2 x 38 W | 
       
        | Amplifiers | 2 x Class-D | 
       
        | Drivers | 2 x Woofers 2 x Tweeters
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        | Frequency Response | 52 Hz to 25 kHz | 
      
     
     
    
     
      Bluetooth Connectivity
     
     
      
       
        | Bluetooth | 5.0 LE | 
       
        | Supported Audio Codecs | AAC | 
      
     
     
    
     
      Additional Wireless Connectivity
     
     
     
    
     
      Wired Connectivity
     
     
      
       
        | Inputs | 1 x 1/8" / 3.5 mm Stereo (Audio) | 
      
     
     
    
     
      Battery
     
     
      
       
        | Battery Chemistry | Lithium-Ion Polymer (LiPo) | 
       
        | Expected Battery Life | 72 Hour | 
      
     
     
    
     
      Power
     
     
      
       
        | AC Input Power | 110 to 240 VAC, 50 / 60 Hz | 
      
     
     
    
     
      Physical
     
     
      
       
        | Memory Card Slot | None | 
       
        | Material | Aluminum, Polycarbonate | 
       
        | Dimensions (W x H x D) | 9.2 x 11.2 x 2.3" / 23.3 x 28.4 x 5.8 cm | 
       
        | Weight | 3.7 lb / 1.7 kg | 
      
     
     
    
     
      Packaging Info
     
     
      
       
        | Package Weight | 5.425 lb | 
       
        | Box Dimensions (LxWxH) | 12.9 x 9.9 x 3" | 
      
     
     
    
   
  
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