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  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Pictures
    2. Style
    3. Portability
    4. Build Quality
    5. Controls
    6. In The Box
  5. Sound
    1. Frequency Response Accuracy
    2. Raw Frequency Response
    3. Soundstage
    4. Dynamics
  6. Active Features
    1. Battery
    2. Voice Assistant
    3. App
  7. Connectivity
    1. Wired
    2. Bluetooth
    3. Wi-Fi
  8. Comments

Bose SoundLink Flex vs Ultimate Ears BOOM 4

Side-by-Side Comparison

Products

Bose SoundLink Flex
Ultimate Ears BOOM 4

Tested using Methodology v0.8

Updated Oct 31, 2024 02:49 PM

SEARCH
Amazon.com

Tested using Methodology v0.8

Updated Nov 20, 2024 03:25 PM

SEE PRICE
BestBuy.com
Bose SoundLink Flex Picture
Ultimate Ears BOOM 4 Picture
Bluetooth
Yes
Wi-Fi
No
Speakerphone
Yes
Voice Assistant
Yes
Battery Powered
Yes
Bluetooth
Yes
Wi-Fi
No
Speakerphone
No
Voice Assistant
No
Battery Powered
Yes

Variants

  • SoundLink Flex (Black)
  • SoundLink Flex (Carmine Red)
  • SoundLink Flex (Chilled Lilac)
  • SoundLink Flex (Cypress Green)
  • SoundLink Flex (Stone Blue)
  • SoundLink Flex (White Smoke)
  • BOOM 4 (Active Black)
  • BOOM 4 (Cobalt Blue)
  • BOOM 4 (Enchanting Lilac)
  • BOOM 4 (Raspberry Red)

Review

See Bose SoundLink Flex Review
See Ultimate Ears BOOM 4 Review
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Our Verdict

Bose SoundLink Flex

Ultimate Ears BOOM 4

The Bose SoundLink Flex and the Ultimate Ears BOOM 4 are portable speakers that feature some key differences that can help you make your buying decision. The Bose features a more balanced sound profile that can more accurately reproduce the details of music and movies. It also has better controls and a built-in mic that works with the voice assistant on your iOS or Android device. That said, the Ultimate Ears is undoubtedly the better pick for outdoor use, thanks to its excellent directivity and much longer battery life. It can also get similarly loud without compressing as much.

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