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  1. Home
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Ultimate Ears WONDERBOOM 2 vs Bose SoundLink Flex

Which Speaker Is Better?

    Top
    Main Differences
    Design
      PicturesStylePortabilityBuild QualityControlsIn The Box
    Sound
      Frequency Response AccuracyRaw Frequency ResponseSoundstageDynamics
    Active Features
      BatteryVoice AssistantApp
    Connectivity
      WiredBluetoothWi-Fi
    Comments

Products

Ultimate Ears WONDERBOOM 2
Bose SoundLink Flex

Tested using Methodology v0.8

Updated Oct 21, 2024 02:09 PM

SEE PRICE
Amazon

Tested using Methodology v0.8

Updated Jul 07, 2026 01:05 PM

SEE PRICE
Bose
Ultimate Ears WONDERBOOM 2 Picture

Track

Bose SoundLink Flex Picture

Track

Bluetooth
Yes
Wi-Fi
No
Speakerphone
No
Voice Assistant
No
Battery Powered
Yes
Bluetooth
Yes
Wi-Fi
No
Speakerphone
Yes
Voice Assistant
Yes
Battery Powered
Yes

Our Verdict

Ultimate Ears WONDERBOOM 2

Bose SoundLink Flex

The Ultimate Ears WONDERBOOM 2 is better than the Bose SoundLink Flex, though they have different strengths. The Ultimate Ears is a stereo speaker with a more open and wide-sounding soundstage. It has less compression present at max volume and significantly longer-lasting battery life, though this can vary depending on your usage. However, the Bose can produce a deeper bass and supports voice assistants through your smartphone.

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Variants

  • WONDERBOOM 2 (Bermuda Blue)
  • WONDERBOOM 2 (Concrete)
  • SoundLink Flex (Black)
  • SoundLink Flex (Carmine Red)

Review

See Ultimate Ears WONDERBOOM 2 Review
See Bose SoundLink Flex Review
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0 

Check Price

Bermuda Blue
WONDERBOOM 2
SEE PRICE
Amazon
Black
SoundLink Flex
SEE PRICE
Bose
Concrete
WONDERBOOM 2
SEARCH
Amazon
Carmine Red
SoundLink Flex
SEARCH
Amazon
Crushed Ice Grey
WONDERBOOM 2
SEE PRICE
Amazon
Chilled Lilac
SoundLink Flex
SEARCH
Amazon
Deep Space
WONDERBOOM 2
SEE PRICE
Amazon
Cypress Green
SoundLink Flex
SEARCH
Amazon
Just Peach
WONDERBOOM 2
SEARCH
Amazon
Stone Blue
SoundLink Flex
SEE PRICE
B&H
Radical Red
WONDERBOOM 2
SEE PRICE
Amazon
White Smoke
SoundLink Flex
SEARCH
Amazon
Unicorn
WONDERBOOM 2
SEARCH
Amazon
 

Main Differences for
Music

Threshold 

0.10

Music 
 

0.0
0.0
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Full Comparison

Design

Style  

Style Photo  

Ultimate Ears WONDERBOOM 2 Style Photo Sample

SAMPLE

Join Now

for pictures & test results

Bose SoundLink Flex Style Photo Sample

SAMPLE

Join Now

for pictures & test results

RGB Lights  

Locked
Locked

Portability 
 

N/A
N/A

Dimensions Photo  

Ultimate Ears WONDERBOOM 2 Dimensions Photo Sample

SAMPLE

Join Now

for pictures & test results

Bose SoundLink Flex Dimensions Photo Sample

SAMPLE

Join Now

for pictures & test results

Volume 
 

Lock in³ (Lock cm³)
Lock in³ (Lock cm³)

Weight 
 

Lock lbs (Lock kg)
Lock lbs (Lock kg)

Power Source 
 

Locked
Locked

One-Hand Carry 
 

Locked
Locked

Build Quality 
 

N/A
N/A

Build Quality Photo  

Ultimate Ears WONDERBOOM 2 Build Quality Photo Sample

SAMPLE

Join Now

for pictures & test results

Bose SoundLink Flex Build Quality Photo Sample

SAMPLE

Join Now

for pictures & test results

Material Quality 
 

Locked
Locked

Water Resistance 
 

Locked
Locked

Dust Resistance 
 

Locked
Locked

Impact Resistance 
 

Locked
Locked

Floats In Water 
 

Locked
Locked

Controls 
 

N/A
N/A

Controls Photo  

Ultimate Ears WONDERBOOM 2 Controls Photo Sample

SAMPLE

Join Now

for pictures & test results

Bose SoundLink Flex Controls Photo Sample

SAMPLE

Join Now

for pictures & test results

Controls Photo 2  

Ultimate Ears WONDERBOOM 2 Controls Photo 2 Sample

SAMPLE

Join Now

for pictures & test results

Bose SoundLink Flex Controls Photo 2 Sample

SAMPLE

Join Now

for pictures & test results

Ease Of Use 
 

Locked
Locked

Feedback 
 

Locked
Locked

Music Play/Pause 
 

Locked
Locked

Call Answer/End 
 

Locked
Locked

Volume Up/Down 
 

Locked
Locked

Track Next/Previous 
 

Locked
Locked

Microphone On/Off 
 

Locked
Locked

Additional Controls 
 

Locked
Locked

In The Box 
 

In The Box Photo  

Ultimate Ears WONDERBOOM 2 In The Box Photo Sample

SAMPLE

Join Now

for pictures & test results

Bose SoundLink Flex In The Box Photo Sample

SAMPLE

Join Now

for pictures & test results

Sound

Frequency Response Accuracy 
 

N/A
N/A

Frequency Response Graph  

Ultimate Ears WONDERBOOM 2 Frequency Response Graph Sample

SAMPLE

Join Now

for pictures & test results

Bose SoundLink Flex Frequency Response Graph Sample

SAMPLE

Join Now

for pictures & test results

Slope 
 

Lock
Lock

Std. Err. 
 

Lock dB
Lock dB

Low-Frequency Extension 
 

Lock Hz
Lock Hz

High-Frequency Extension 
 

Lock kHz
Lock kHz

Raw Frequency Response 
 

Raw Frequency Response Graph  

Ultimate Ears WONDERBOOM 2 Raw Frequency Response Graph Sample

SAMPLE

Join Now

for pictures & test results

Bose SoundLink Flex Raw Frequency Response Graph Sample

SAMPLE

Join Now

for pictures & test results

Binaural Recording @ 1m 
 

Join Now
Join Now

Binaural Recording @ 2m 
 

Join Now
Join Now

Soundstage 
 

N/A
N/A

Directivity Graph  

Ultimate Ears WONDERBOOM 2 Directivity Graph Sample

SAMPLE

Join Now

for pictures & test results

Bose SoundLink Flex Directivity Graph Sample

SAMPLE

Join Now

for pictures & test results

Directivity Index 
 

Lock dB
Lock dB

Stereo 
 

Locked
Locked

Dynamics 
 

N/A
N/A

Dynamic Range Compression  

Ultimate Ears WONDERBOOM 2 Dynamic Range Compression Sample

SAMPLE

Join Now

for pictures & test results

Bose SoundLink Flex Dynamic Range Compression Sample

SAMPLE

Join Now

for pictures & test results

SPL @ Max Volume 
 

Lock dB SPL
Lock dB SPL

DRC @ Max Volume 
 

Lock dB
Lock dB
Active Features

Battery 
 

N/A
N/A

Battery Life 
 

Lock hrs
Lock hrs

Charge Time 
 

Lock hrs
Lock hrs

Power Saving 
 

Locked
Locked

Charging Port 
 

Locked
Locked

Battery Powered 
 

Locked
Locked

Voice Assistant 
 

N/A
N/A

Alexa 
 

Locked
Locked

Google Assistant 
 

Locked
Locked

Speakerphone 
 

Locked
Locked

Siri 
 

Locked
Locked

Voice Assistant 
 

Locked
Locked

Voice Activation 
 

Locked
Locked

Microphone Mute 
 

Locked
Locked

Far-Field Performance 
 

Locked
Locked

Ambient Noise Performance 
 

Locked
Locked

App 
 

N/A
N/A

App Picture  

Ultimate Ears WONDERBOOM 2 App Picture Sample

SAMPLE

Join Now

for pictures & test results

Bose SoundLink Flex App Picture Sample

SAMPLE

Join Now

for pictures & test results

App Name 
 

Locked
Locked

iOS 
 

Locked
Locked

Android 
 

Locked
Locked

EQ 
 

Locked
Locked

Stereo Pair Mode 
 

Locked
Locked

Party Mode 
 

Locked
Locked

Multi-Room 
 

Locked
Locked
Connectivity

Wired 
 

Aux Input 
 

Locked
Locked

USB Audio 
 

Locked
Locked

Other Ports 
 

Locked
Locked

Bluetooth 
 

N/A
N/A

Bluetooth 
 

Locked
Locked

Bluetooth Version 
 

Locked
Locked

Bluetooth iOS Latency 
 

Lock ms
Lock ms

Bluetooth Android Latency 
 

Lock ms
Lock ms

Bluetooth Range 
 

Lock ft (Lock m)
Lock ft (Lock m)

Multi-Device Pairing 
 

Locked
Locked

Wi-Fi 
 

N/A
N/A

Wi-Fi Version 
 

Locked
Locked

Wi-Fi Frequency Band 
 

Locked
Locked

Wi-Fi 
 

Locked
Locked

Apple AirPlay 
 

Locked
Locked

AirPlay Latency 
 

N/A
N/A

Google Chromecast 
 

Locked
Locked

Chromecast Latency 
 

N/A
N/A

Check Price

Bermuda Blue
WONDERBOOM 2
SEE PRICE
Amazon
Black
SoundLink Flex
SEE PRICE
Bose
Concrete
WONDERBOOM 2
SEARCH
Amazon
Carmine Red
SoundLink Flex
SEARCH
Amazon
Crushed Ice Grey
WONDERBOOM 2
SEE PRICE
Amazon
Chilled Lilac
SoundLink Flex
SEARCH
Amazon
Deep Space
WONDERBOOM 2
SEE PRICE
Amazon
Cypress Green
SoundLink Flex
SEARCH
Amazon
Just Peach
WONDERBOOM 2
SEARCH
Amazon
Stone Blue
SoundLink Flex
SEE PRICE
B&H
Radical Red
WONDERBOOM 2
SEE PRICE
Amazon
White Smoke
SoundLink Flex
SEARCH
Amazon
Unicorn
WONDERBOOM 2
SEARCH
Amazon
 
Back to Top

Ultimate Ears WONDERBOOM 2

Bose SoundLink Flex

Comments

  1. Comparison
 • Posted 2 years ago

Ultimate Ears WONDERBOOM 2 vs Bose SoundLink Flex: Main Discussion

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