Short answer: the Sony ULT Field 3 for better sound quality, the Tribit Stormbox Mini+ for the lower price. The Sony XB33 ranks higher than the Tribit Stormbox Mini+ (#77 vs #142 of 175 medium speakers) but is discontinued. Its replacement, the Sony ULT Field 3, is rated 3.4/5 at $208; the Tribit Stormbox Mini+ is rated 2.5/5 at $31.99, $176.01 cheaper.
The Sony XB33 is the better-sounding, longer-running choice. IP67 rated and lightweight (2.4 lb). It is rated for 24 hours of battery against 12 for the Tribit Stormbox Mini+. It supports LDAC Bluetooth, which the Tribit Stormbox Mini+ lacks. Watch for: Not very loud.
The Tribit Stormbox Mini+ is the lighter choice. 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. At 1.2 lbs (544 g) it weighs much less than the Sony XB33 at 2.4 lbs (1.1 kg). It keeps a wired aux input, which the Sony XB33 lacks. Watch for: Not a great sounding speaker, really weak bass.
Buy the Tribit Stormbox Mini+ if price matters most. For better sound quality, the Sony ULT Field 3, the replacement for the discontinued Sony XB33, is rated higher but costs $208.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Sony XB33 | Tribit Stormbox Mini+ | |
|---|---|---|
| Price | $110 Discontinued | $31.99 |
| Ranked | #77 of 175 in Medium Size Portable Bluetooth Speakers | #142 of 175 in Medium Size Portable Bluetooth Speakers |
| App | Yes (Sony Music Connect App) | Yes |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 50Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC |
| Bluetooth Latency | 110ms | - |
| EQ | Yes (3 band) | Yes (App EQ) |
| IP Rating | IP67 | IPX7 |
| Maximum SPL | 97dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Party Connect up to 100 speakers) | - |
| Power Bank | Yes (USB-A) | - |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Weight | 2.4 lbs (1.1 kg) | 1.2 lbs (544 g) |
| Bluetooth Version | 5.0 | 5.4 |
| Dimensions | 9.7” x 3.8” x 4.2” (246 x 97 x 106 mm) | 3.6” x 3.6” x 4.7” (91 x 91 x 119 mm) |
| Amplifier Power | 16W RMS | 12W |
| Drivers | 2x 48x70mm X-Balanced racetrack drivers + 2x passive radiators | 2x 48mm full-range drivers + 1x passive radiator |
| Digital Aux Input | No | No |
| Lights | Yes | Yes |
| Power Input | USB-C | USB-C |
| TWS | Yes | Yes |
| Charging Time | - | 2.5 hours |
| Built-in Microphone | - | Yes |
| MicroSD Playback | - | Yes |
Related Speaker Comparisons
How Sony XB33 compares with other leading options:
- Soundcore Motion 300 vs Sony XB33
- Soundcore Motion+ vs Sony XB33
- Soundcore Boost “upgraded” 2021 vs Sony XB33
- JBL Charge 6 vs Sony XB33
- JBL Flip 6 vs Sony XB33
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
Sony XB33: $110 Discontinued eBay
Newer model: the Sony ULT Field 3, ranked higher, rated 3.4/5, released Apr 2025.
Older models: the Sony SRS-XB31 (ranked lower, rated 2.8/5) and the Sony SRS-XB30 (ranked lower, rated 2.6/5). See every Sony XB and ULT generation.
Pros: IP67 rated and lightweight (2.4 lb). App-controlled color LED lighting, Party Connect links up to 100 speakers. ~19 hour real-world battery without lights. Measured bass extension of 50Hz (-10dB).
Cons: Not very loud. Upper bass peaks, midrange dip, upper midrange peaks, not very neutral. Speaker will not remain at max volume and will turn itself down automatically. Discontinued.
Full Sony XB33 review and specifications →
| Released | May 2020 (6 years ago) |
|---|---|
| Amplifier Power | 16W RMS |
| App | Yes (Sony Music Connect App) |
| Aux Input | No |
| Bass Extension (-10dB) | 50Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Latency | 110ms |
| Bluetooth Version | 5.0 |
| Digital Aux Input | No |
| Dimensions | 9.7” x 3.8” x 4.2” (246 x 97 x 106 mm) |
| Drivers | 2x 48x70mm X-Balanced racetrack drivers + 2x passive radiators |
| EQ | Yes (3 band) |
| IP Rating | IP67 |
| Lights | Yes |
| Maximum SPL | 97dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 2.4 lbs (1.1 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Sony XB33 vs XB32 vs JBL Charge 4 best £120 bluetooth speaker? More from alanrossreviews →
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- Alan Ross Reviews: Sony xb33 vs xb43 vs Soundcore Motion Plus speakers test
- Alan Ross Reviews: JBL Charge 5 vs Motion Plus and Sony XB33 - ultimate travel speaker 2021 🤗
- Alan Ross Reviews: LG Xboom Go PL7 vs JBL Charge 4 and Sony XB33 - best Bluetooth speaker?
- Alan Ross Reviews: Tribit Xsound Mega vs the world! (JBL Charge 5, Bose Flex, Sony XB33, LG PL7) 👍
- GYMCADDY: Sony XE300 Review And Compared to Sony XB33 - A Muffled Mess More from GYMCADDY →
- Head-to-Head 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
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