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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

Ultimate Ears WONDERBOOM 2 vs Ultimate Ears WONDERBOOM 4

Side-by-Side Comparison

Products

Ultimate Ears WONDERBOOM 2
Ultimate Ears WONDERBOOM 4

Tested using Methodology v0.8

Updated Sep 16, 2024 05:33 PM

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Tested using Methodology v0.8

Updated Feb 06, 2025 10:55 PM

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Ultimate Ears WONDERBOOM 2 Picture
Ultimate Ears WONDERBOOM 4 Picture
Bluetooth
Yes
Wi-Fi
No
Speakerphone
No
Voice Assistant
No
Battery Powered
Yes
Bluetooth
Yes
Wi-Fi
No
Speakerphone
No
Voice Assistant
No
Battery Powered
Yes
  1. Recommended in 10 articles:
  2. Bluetooth
  3. Portable
  4. Outdoor
  5. Shower
  6. Small
  7. Budget And Cheap
  8. Waterproof Bluetooth
  9. Bluetooth For Sound
  10. Bluetooth Under $100
  11. Ultimate Ears

Variants

  • WONDERBOOM 2 (Bermuda Blue)
  • WONDERBOOM 2 (Concrete)
  • WONDERBOOM 2 (Crushed Ice Grey)
  • WONDERBOOM 2 (Deep Space)
  • WONDERBOOM 2 (Just Peach)
  • WONDERBOOM 2 (Radical Red)
  • WONDERBOOM 2 (Unicorn)
  • WONDERBOOM 4 (Active Black)
  • WONDERBOOM 4 (Cobalt Blue)
  • WONDERBOOM 4 (Hyper Pink)
  • WONDERBOOM 4 (Joyous Bright)

Review

See Ultimate Ears WONDERBOOM 2 Review
See Ultimate Ears WONDERBOOM 4 Review
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Our Verdict

Ultimate Ears WONDERBOOM 2

Ultimate Ears WONDERBOOM 4

The Ultimate Ears WONDERBOOM 4 is slightly better than the Ultimate Ears WONDERBOOM 2. The WONDERBOOM 4 uses the newer USB-C charging standard and adds a 'Podcast' EQ preset. If you watch videos, this speaker has much lower latency, so you'll notice fewer lipsync mismatches. It also has a greater Bluetooth range if you're milling about with your phone in your pocket. However, if you're fine with charging using micro-USB, they have more in common than differences, such as virtually the same battery life and similar 360-degree directivity.

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Bermuda Blue
WONDERBOOM 2
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Active Black
WONDERBOOM 4
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Concrete
WONDERBOOM 2
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Cobalt Blue
WONDERBOOM 4
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Crushed Ice Grey
WONDERBOOM 2
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Hyper Pink
WONDERBOOM 4
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Deep Space
WONDERBOOM 2
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Joyous Bright
WONDERBOOM 4
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Just Peach
WONDERBOOM 2
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Radical Red
WONDERBOOM 2
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Unicorn
WONDERBOOM 2
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Main Differences for
Music

Threshold 

0.10

Music 

6.8
6.8
No major differences between these speakers for music. See full list of tests below.

Full Comparison

Design

Style  

Style Photo  

Ultimate Ears WONDERBOOM 2 Style Photo
Ultimate Ears WONDERBOOM 4 Style Photo

RGB Lights  

No
No
Show Text 

Portability 
 

9.3
9.3

Dimensions Photo  

Ultimate Ears WONDERBOOM 2 Dimensions Photo
Ultimate Ears WONDERBOOM 4 Dimensions Photo

Volume 
 

58 in³ (944 cm³)
58 in³ (944 cm³)

Weight 
 

0.9 lbs (0.4 kg)
0.9 lbs (0.4 kg)

Power Source 
 

Battery & USB
Battery & USB

One-Hand Carry 
 

Yes
Yes
Show Text 

Build Quality 
 

9.0
9.0

Build Quality Photo  

Ultimate Ears WONDERBOOM 2 Build Quality Photo
Ultimate Ears WONDERBOOM 4 Build Quality Photo

Material Quality 
 

Great
Great

Water Resistance 
 

Submersible (IPx7)
Submersible (IPx7)

Dust Resistance 
 

Dust-Proof (IP6x)
Dust-Proof (IP6x)

Impact Resistance 
 

Yes (IK rating unspecified)
Yes (IK rating unspecified)

Floats In Water 
 

Yes
Yes
Show Text 

Controls 
 

6.6
6.6

Controls Photo  

Ultimate Ears WONDERBOOM 2 Controls Photo
Ultimate Ears WONDERBOOM 4 Controls Photo

Controls Photo 2  

Ultimate Ears WONDERBOOM 2 Controls Photo 2
Ultimate Ears WONDERBOOM 4 Controls Photo 2

Ease Of Use 
 

Great
Great

Feedback 
 

Good
Good

Music Play/Pause 
 

Yes (Physical)
Yes (Physical)

Call Answer/End 
 

No
No

Volume Up/Down 
 

Yes (Physical)
Yes (Physical)

Track Next/Previous 
 

Forward Only (Physical)
Forward Only (Physical)

Microphone On/Off 
 

No
No

Additional Controls 
 

Yes
Yes
Show Text 

In The Box 
 

In The Box Photo  

Ultimate Ears WONDERBOOM 2 In The Box Photo
Ultimate Ears WONDERBOOM 4 In The Box Photo
Show Text 
Sound

Frequency Response Accuracy 
 

6.2
6.3

Frequency Response Graph  

See details on graph tool
See details on graph tool

Slope 
 

0.41
0.31

Std. Err. 
 

2.61 dB
2.29 dB

Low-Frequency Extension 
 

89.8 Hz
89.8 Hz

High-Frequency Extension 
 

16.3 kHz
16.0 kHz
Show Text 

Raw Frequency Response 
 

Raw Frequency Response Graph  

See details on graph tool
See details on graph tool

Binaural Recording @ 1m 
 

Binaural Recording @ 2m 
 

Soundstage 
 

9.1
9.0

Directivity Graph  

See details on graph tool
See details on graph tool

Directivity Index 
 

1.66 dB
1.79 dB

Stereo 
 

Yes
Yes
Show Text 

Dynamics 
 

7.3
7.3

Dynamic Range Compression  

See details on graph tool
See details on graph tool

SPL @ Max Volume 
 

87.9 dB SPL
≈ 86.7 dB SPL

DRC @ Max Volume 
 

1.27 dB
1.00 dB
Show Text 
Active Features

Battery 
 

8.9
8.9

Battery Life 
 

12.9 hrs
13.1 hrs

Charge Time 
 

2.5 hrs
2.5 hrs

Power Saving 
 

Yes
Yes

Charging Port 
 

Micro-USB
USB-C

Battery Powered 
 

Yes
Yes
Show Text 

Voice Assistant 
 

0.0
0.0

Alexa 
 

No
No

Google Assistant 
 

No
No

Speakerphone 
 

No
No

Siri 
 

No
No

Voice Assistant 
 

No
No

Voice Activation 
 

No
No

Microphone Mute 
 

No Microphone
No

Far-Field Performance 
 

No Microphone
No Microphone

Ambient Noise Performance 
 

No Microphone
No Microphone
Show Text 

App 
 

0.0
0.0

App Picture  

Ultimate Ears WONDERBOOM 2 App Picture
Ultimate Ears WONDERBOOM 4 App Picture

App Name 
 

No App
No App

iOS 
 

No
No

Android 
 

No
No

EQ 
 

No
No

Stereo Pair Mode 
 

No
No

Party Mode 
 

No
No

Multi-Room 
 

No
No
Show Text 
Connectivity

Wired 
 

Aux Input 
 

No
No

USB Audio 
 

No
No

Other Ports 
 

No
No
Show Text 

Bluetooth 
 

7.0
8.9

Bluetooth 
 

Yes
Yes

Bluetooth Version 
 

Unspecified
5.2

Bluetooth iOS Latency 
 

215 ms
66 ms

Bluetooth Android Latency 
 

174 ms
82 ms

Bluetooth Range 
 

155.2 ft (47.3 m)
334.6 ft (102.0 m)

Multi-Device Pairing 
 

2 Devices
2 Devices
Show Text 

Wi-Fi 
 

0.0
0.0

Wi-Fi Version 
 

No Wi-Fi
No Wi-Fi

Wi-Fi Frequency Band 
 

No Wi-Fi
No Wi-Fi

Wi-Fi 
 

No
No

Apple AirPlay 
 

No
No

AirPlay Latency 
 

N/A
N/A

Google Chromecast 
 

No
No

Chromecast Latency 
 

N/A
N/A
Show Text 

Check Price

Bermuda Blue
WONDERBOOM 2
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Active Black
WONDERBOOM 4
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Concrete
WONDERBOOM 2
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Cobalt Blue
WONDERBOOM 4
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Crushed Ice Grey
WONDERBOOM 2
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Hyper Pink
WONDERBOOM 4
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Deep Space
WONDERBOOM 2
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Joyous Bright
WONDERBOOM 4
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Just Peach
WONDERBOOM 2
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Radical Red
WONDERBOOM 2
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Unicorn
WONDERBOOM 2
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Back to Top

Ultimate Ears WONDERBOOM 2

Ultimate Ears WONDERBOOM 4

Comments

  1. Comparison
 • Posted 7 months ago

Ultimate Ears WONDERBOOM 2 vs Ultimate Ears WONDERBOOM 4: Main Discussion

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