Skip to content
  1. šŸšš Free Shipping on Orders over $99 to Continental US
  2. 10% OFF 4ļøāƒ£ or MORE Records Every Day! details
  3. šŸ”“ Save On Audio Gear shop gear specials

OB-4 Portable Speaker - Black

SKU sp-741

hifi speaker w/Bluetooth, FM radio, loop recorder + effects
Write a review
| Ask a question
sale $649.00
TTL Rewards icon Earn up to 6490 Reward Points with this purchase! Read more
  • Get more info on our FREE SHIPPING terms
  • šŸ“¦ Standard Shipping ships within 1-3 Business Days
  • šŸŒŽ International Shipping Experts, Fully Tracked
  • ā‡Ø Need a gear recommendation or a customized package?
  • Contact our support team for all your questions!

    Contact support for recommendations or customization questions

    We answer requests Mon-Fri 10am-6pm EST

  • Lab Overview
  • Review & Q+A
  • Tagged

Lab Overview


  • 3 in one music player: hifi speaker w/bluetooth, FM radio, loop recorder, and sound effect toy
  • true portable sound or use at home
  • stereo sound - crisp + loud, exceptionalĀ clarity
  • endless looping tape recorder - the OB-4 continually records whatever is playing on a loop, use the mechanical dial to rewind
  • disk mode: add effects to the loop recorder and select pre-programmed ambient loops; more options to come
  • dual postion: stand-up or fold-down handle and use it as angled stand
  • 3.5mm stereo line input
  • sturdy casing: amorphous polymer glass fibre reinforced pc and milled aluminum
  • internal rechargeable battery / plug also included
  • long life battery: average 40 hours listening per charge

"First and foremost, the OB-4 sounds exceptional. Was not expecting such detailed and loud output from a component so compact. The Bluetooth connection was very reliable, and the FM radio option is useful to combat streaming burnout. Lastly, the disk function and effectsĀ are super-fun, they add a creative (magical!) element to the listening experience." - TTL


  • 76w total power
  • frequency range: 52 ā€“ 25000 Hz
  • inputs: Bluetooth classic (AAC), Bluetooth 5.0 (high def), 3.5mm stereo TRS input, FM radio
  • subwoofer port located on side of body
  • pre-loaded ambient loops include: metronome
  • tape loop rolling recording duration: 2 hours
  • strong internal antenna, plus an extended antenna wire forĀ added boost
  • 9.2 x 11.2 x 2.6" / 232.5 x 284 x 57.5mm
  • 3.75 lbs / 1.7kg


  • power cable
  • booster antenna cable
UPC: 7350073033539

Review & Q+A


Labheads Also Viewed