Short answer: the Soundcore Boom 3i is the stronger value-oriented portable speaker, while the Ultimate Ears Megaboom 4 is mainly for buyers who prioritize the UE ecosystem and a floating design. The Boom 3i ranks 139 places 31 of 175, compared with the Megaboom 4 at 170 of 175.
The Boom 3i aims for the warm, bass-forward balance associated with the JBL Charge line and comes close for less money. Update its firmware before judging the low end, since early firmware could distort bass at higher output.
The Megaboom 4 brings IP67 protection, floating capability, USB-C charging, 20-hour battery life, and PartyUp linking. Its sound is the compromise: treble is rolled off, it is not especially loud, and distortion rises at high volume.
Buy the Soundcore Boom 3i if you want the better-sounding portable speaker and prefer its value proposition.
Buy the Ultimate Ears Megaboom 4 if floating IP67 hardware, long battery life, and PartyUp matter more than maximum clarity.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Soundcore Boom 3i | Ultimate Ears Megaboom 4 | |
|---|---|---|
| Price | $118.99 | $200 |
| Ranked | #31 of 175 in Medium Size Portable Bluetooth Speakers | #170 of 175 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Bass Extension (-10dB) | 56Hz | - |
| Battery Life | 16 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| EQ | Yes | Yes (via app) |
| IP Rating | IP68 | IP67 |
| Party Mode | No | Yes (PartyUp up to 50 speakers) |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | No | Yes |
| TWS | Yes | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.1 |
| Dimensions | 8.3” x 3.3” x 3.1” (210 x 85 x 78.5 mm) | 3.4” x 3.4” x 8.9” (87 x 87 x 225 mm) |
| Drivers | 94mm woofer + tweeter | 2x 50x50mm full-range + 2x 55x86mm passive radiators |
| Weight | 1.7 lbs (783 g) | 2.4 lbs (1.1 kg) |
| Amplifier Power | 50W | - |
| Bluetooth Codecs | SBC, AAC | SBC |
| Built-in Microphone | Yes | No |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Strap | Yes (detachable strap) | Yes (built-in loop) |
| Maximum SPL | - | 91dB (Manufacturer specified) |
Related Speaker Comparisons
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- Soundcore Motion 300 vs Soundcore Boom 3i
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- Soundcore Boost “upgraded” 2021 vs Soundcore Boom 3i
- Soundcore Boom 3i vs Minirig 4
Prices on this page were last checked October 12, 2026 at 4:13 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Soundcore Boom 3i: $118.99 Amazon $118.99 B&H Photo Video eBay
Pros: Looks to be designed as a direct competitor to the JBL Charge 5 with a very similar sound profile, warm tuned with boosted bass. Better value for the money than the JBL Charge 5. Measured bass extension of 56Hz (-10dB).
Cons: Not quite as good as a JBL Charge 5, doesn’t go quite as loud or sound quite as balanced, but very very close. An earlier firmware version had some bass distortion, update your firmware in the Soundcore App
Full Soundcore Boom 3i review and specifications →
| Released | Jun 2025 (1 year ago) |
|---|---|
| Amplifier Power | 50W |
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 56Hz |
| Battery Life | 16 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 8.3” x 3.3” x 3.1” (210 x 85 x 78.5 mm) |
| Drivers | 94mm woofer + tweeter |
| EQ | Yes |
| IP Rating | IP68 |
| Lights | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (detachable strap) |
| TWS | Yes |
| Weight | 1.7 lbs (783 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Oluv Patreon: SoundCore Boom 3i - first impressions & EQs More from Oluv’Sone →
- Mateusz Cholewa: Soundcore Boom 3i vs Tronsmart Mirtune C3 Plus More from Mateusz Cholewa →
- Picky Audio: Compact Speaker BEAST! 🔥 soundcore Boom 3i More from pickyaudio →
- Clinch Audio Bass: Mirtune C3 Plus 50w VS SoundCore Boom 3i 50w
- Head-to-Head Comparisons
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Ultimate Ears Megaboom 4: $200 Amazon $200 eBay
Older model: the Ultimate Ears Megaboom 3 (ranked higher, rated 3/5). See every Ultimate Ears Wonderboom, Boom and Megaboom generation.
Same family: the Ultimate Ears Wonderboom 4 (smaller model, ranked higher, rated 2.9/5) and the Ultimate Ears Boom 4 (smaller model, ranked higher, rated 2.9/5).
Pros: IP67 rated, floats, and finally uses USB-C charging. 20 hour battery life. ‘PartyUp’ feature syncs multiple UE speakers together.
Cons: A lot of distortion at higher volumes. Rolled off treble. Not very loud. They really screwed this up
Full Ultimate Ears Megaboom 4 review and specifications →
| Released | Jun 2024 (2 years ago) |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.1 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 3.4” x 3.4” x 8.9” (87 x 87 x 225 mm) |
| Drivers | 2x 50x50mm full-range + 2x 55x86mm passive radiators |
| EQ | Yes (via app) |
| IP Rating | IP67 |
| Maximum SPL | 91dB (Manufacturer specified) |
| Omnidirectional | Yes |
| Party Mode | Yes (PartyUp up to 50 speakers) |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 2.4 lbs (1.1 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Jay’s Straight Up Reviews & More: Ultimate Ears MegaBoom 4 vs Sony ULT Field 1 😧 $200 vs $128 Cylinder Bluetooth Speaker Matchup More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: Ultimate Ears MegaBoom 4 vs W-King D320 🔋Does Paying More Get You Less? 😧
- Smart Home Sounds: UE Everboom Review PLUS All-New Wonderboom 4, Boom 4 & Megaboom 4 More from Smart Home Sounds →
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