Products
Ultimate Ears EPICBOOM
JBL Boombox 4
Tested using Methodology v0.8
Updated Oct 23, 2025 05:48 PM
SEE PRICE
Amazon.com
Tested using Methodology v0.8
Updated Oct 31, 2025 08:26 PM
SEE PRICE
Amazon.com
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
Our Verdict
Ultimate Ears EPICBOOM
JBL Boombox 4
The Ultimate Ears EPICBOOM and the JBL Boombox 4 are both portable party speakers from popular manufacturers in the Bluetooth speaker space. The JBL is a more complete party speaker: it can get louder and has a much longer battery life, and there's even the option to swap out battery packs for even more battery life. When it comes to sound profile, the JBL offers a more bass-heavy sound that can inject some energy into the dancefloor, though both speakers feature a graphic EQ and presets for sound customization. The Ultimate Ears is a better choice for portability, though: it's smaller and lighter, plus its cylindrical design gives it top-tier directivity.
Variants
- EPICBOOM (Charcoal Black)
- EPICBOOM (Cotton White)
- Boombox 4 (Black)
- Boombox 4 (Blue)
- Boombox 4 (Squad)
Check Price
Charcoal Black
EPICBOOM
SEE PRICE
Amazon.com
Black
Boombox 4
SEE PRICE
B&H
Cotton White
EPICBOOM
SEE PRICE
Amazon.com
Blue
Boombox 4
SEE PRICE
Amazon.com
Squad
Boombox 4
SEE PRICE
Amazon.com
Main Differences for
Music
Music
Threshold
Music
7.4
7.2
Soundstage
9.0
6.9
Frequency Response Accuracy
7.0
7.2
Full Comparison
Design
Style
Style Photo
RGB Lights
No
No
Portability
8.9
8.2
Dimensions Photo
Volume
283 in³ (4,635 cm³)
1,518 in³ (24,868 cm³)
Weight
4.4 lbs (2.0 kg)
13.2 lbs (6.0 kg)
Power Source
Battery & USB
AC & Battery
One-Hand Carry
Yes
Yes
Build Quality
9.0
8.6
Build Quality Photo
Material Quality
Great
Great
Water Resistance
Submersible (IPx7)
Submersible (IPx8)
Dust Resistance
Dust-Proof (IP6x)
Dust-Proof (IP6x)
Impact Resistance
Yes (IK rating unspecified)
Unspecified
Floats In Water
Yes
Yes
Controls
6.9
6.9
Controls Photo
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
Yes (Physical)
Yes (Physical)
Microphone On/Off
No
No
Additional Controls
Yes
Yes
In The Box
In The Box Photo
Sound
Frequency Response Accuracy
7.0
7.2
Frequency Response Graph
Slope
0.69
0.40
Std. Err.
3.37 dB
3.44 dB
Low-Frequency Extension
55.0 Hz
49.0 Hz
High-Frequency Extension
19.1 kHz
19.1 kHz
Raw Frequency Response
Raw Frequency Response Graph
Binaural Recording @ 1m
Binaural Recording @ 2m
Soundstage
9.0
6.9
Directivity Graph
Directivity Index
1.91 dB
5.91 dB
Stereo
Yes
Yes
Dynamics
7.2
7.6
Dynamic Range Compression
SPL @ Max Volume
93.6 dB SPL
101.8 dB SPL
DRC @ Max Volume
2.84 dB
3.99 dB
Active Features
Battery
9.1
9.2
Battery Life
15.8 hrs
40.3 hrs
Charge Time
2.4 hrs
2.9 hrs
Power Saving
Yes
Yes
Charging Port
USB-C
AC
Battery Powered
Yes
Yes
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 Microphone
Far-Field Performance
No Microphone
No Microphone
Ambient Noise Performance
No Microphone
No Microphone
App
7.9
7.9
App Picture
App Name
Ultimate Ears
JBL Portable
iOS
Yes
Yes
Android
Yes
Yes
EQ
Graphic + Presets
Graphic + Presets
Stereo Pair Mode
Yes
Yes
Party Mode
Yes
Yes
Multi-Room
No
No
Connectivity
Wired
Aux Input
No
No
USB Audio
No
Yes
Other Ports
No
Yes
Bluetooth
7.5
7.6
Bluetooth
Yes
Yes
Bluetooth Version
5.1
5.4
Bluetooth iOS Latency
112 ms
254 ms
Bluetooth Android Latency
157 ms
217 ms
Bluetooth Range
328.1 ft (100.0 m)
334.6 ft (102.0 m)
Multi-Device Pairing
No
2 Devices
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
Check Price
Charcoal Black
EPICBOOM
SEE PRICE
Amazon.com
Black
Boombox 4
SEE PRICE
B&H
Cotton White
EPICBOOM
SEE PRICE
Amazon.com
Blue
Boombox 4
SEE PRICE
Amazon.com
Squad
Boombox 4
SEE PRICE
Amazon.com
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Ultimate Ears EPICBOOM
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Comments
Ultimate Ears EPICBOOM vs JBL Boombox 4: Main Discussion
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