Short answer: the Ultimate Ears Boom 4 if sound quality matters most, the Tribit Stormbox Mini+ if price matters most, though neither ranks well in its class. The Ultimate Ears Boom 4 ranks #113 of 175 medium speakers, rated 2.9/5, at $129.99. The Tribit Stormbox Mini+ ranks #142, rated 2.5/5, at $31.99, $98 cheaper. Both are rated below 3.0/5 among the 175 medium speakers, so if sound quality matters, consider the EarFun Uboom L instead, ranked #2 at $49.79.
The Ultimate Ears Boom 4 is the better-sounding pick. IP67 rated, floats, and finally charges via USB-C instead of the older Booms’ Micro-USB. The tradeoff: Not much improvement over the old ones.
What the Tribit Stormbox Mini+ does well: IPX7 waterproof, app support with EQ presets and AAC codec, true wireless stereo (TWS) capability, USB-C charging, built-in mic for calls, AUX input, microSD card playback. It supports AAC Bluetooth, which the Ultimate Ears Boom 4 lacks. It keeps a wired aux input, which the Ultimate Ears Boom 4 lacks. The tradeoff: Not a great sounding speaker, really weak bass.
Buy the Ultimate Ears Boom 4 when sound quality outweighs the price for you, and the Tribit Stormbox Mini+ when the price outweighs sound quality instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Ultimate Ears Boom 4 | Tribit Stormbox Mini+ | |
|---|---|---|
| Price | $129.99 | $31.99 |
| Ranked | #113 of 175 in Medium Size Portable Bluetooth Speakers | #142 of 175 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Battery Life | 15 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| IP Rating | IP67 | IPX7 |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Weight | 1.4 lbs (620 g) | 1.2 lbs (544 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.1 | 5.4 |
| Dimensions | 7.2” x 2.9” x 2.9” (184 x 73 x 73 mm) | 3.6” x 3.6” x 4.7” (91 x 91 x 119 mm) |
| Drivers | 2x 1.57” (40mm) active drivers + 2x 1.81” x 2.57” (46.1 x 65.2mm) passive radiators | 2x 48mm full-range drivers + 1x passive radiator |
| TWS | Yes | Yes |
| EQ | Yes (via app) | Yes (App EQ) |
| Built-in Microphone | No | Yes |
| Power Bank | No | - |
| Aux Input | No | Yes |
| Maximum SPL | 85dBC (Manufacturer specified) | - |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC, AAC |
| Strap | Yes (built-in loop) | - |
| Charging Time | - | 2.5 hours |
| Lights | - | Yes |
| MicroSD Playback | - | Yes |
| Amplifier Power | - | 12W |
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- Soundcore Boost “upgraded” 2021 vs Ultimate Ears Boom 4
- Ultimate Ears Boom 4 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
Ultimate Ears Boom 4: $129.99 Amazon $129.99 eBay
Older model: the Ultimate Ears Boom 3 (ranked lower, rated 2.9/5). 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 Megaboom 4 (larger model, ranked lower, rated 2.1/5).
Pros: IP67 rated, floats, and finally charges via USB-C instead of the older Booms’ Micro-USB. 15 hour battery. Customizable EQ and speaker-pairing via the UE app.
Cons: Not much improvement over the old ones. Weak bass extension and thuddy bass. Gets distorted above 90%
Full Ultimate Ears Boom 4 review and specifications →
| Released | Jun 2024 (2 years ago) |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 15 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.1 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 7.2” x 2.9” x 2.9” (184 x 73 x 73 mm) |
| Drivers | 2x 1.57” (40mm) active drivers + 2x 1.81” x 2.57” (46.1 x 65.2mm) passive radiators |
| EQ | Yes (via app) |
| IP Rating | IP67 |
| Maximum SPL | 85dBC (Manufacturer specified) |
| Omnidirectional | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 1.4 lbs (620 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Ultimate Ears Boom 4 vs Ultimate Ears Boom 3
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom
- Ultimate Ears Boom 4 vs Klipsch Groove
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom 2
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom 3
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom 4
- Ultimate Ears Boom 4 vs DBSONO X-Blast F37
- Ultimate Ears Boom 4 vs Sony SRS-XE300
- See all 139 comparisons
Tribit Stormbox Mini+: $31.99 Amazon $31.99 eBay
Older model: the Tribit Stormbox Mini (ranked lower, rated 2.4/5). See every Tribit Stormbox Mini generation.
Pros: IPX7 waterproof, app support with EQ presets and AAC codec, true wireless stereo (TWS) capability, USB-C charging, built-in mic for calls, AUX input, microSD card playback.
Cons: Not a great sounding speaker, really weak bass.
Full Tribit Stormbox Mini+ review and specifications →
| Released | Jul 2025 (1 year ago) |
|---|---|
| Amplifier Power | 12W |
| App | Yes |
| Aux Input | Yes |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Version | 5.4 |
| Built-in Microphone | Yes |
| Charging Time | 2.5 hours |
| Digital Aux Input | No |
| Dimensions | 3.6” x 3.6” x 4.7” (91 x 91 x 119 mm) |
| Drivers | 2x 48mm full-range drivers + 1x passive radiator |
| EQ | Yes (App EQ) |
| IP Rating | IPX7 |
| Lights | Yes |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.2 lbs (544 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Tribit Stormbox Mini+ vs Sony SRS-XE200
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- Tribit Stormbox Mini+ vs Tribit Stormbox Mini
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