Short answer: the Sony XB33 on measured sound quality, the Ultimate Ears Wonderboom 2 on price. The Sony XB33 ranks #59 of 136 medium speakers at $110. The Ultimate Ears Wonderboom 2 ranks #86 at $80, $30 cheaper.
What the Sony XB33 offers: 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. Watch for: 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.
What the Ultimate Ears Wonderboom 2 offers: IP67 rated and floats. Compact and light enough to toss in a bag. Watch for: Not stereo, barely any bass, recessed treble. Slightly boosted 93hz upper bass Dip at 9khz. You can tell from the micro USB that they are just feeding you the same crap hardware over and over, this is inexcusable for a product released in 2019. Not technically a 360 speaker, only front and rear.
Buy the Sony XB33 when sound quality outweighs the price for you, and the Ultimate Ears Wonderboom 2 when the price outweighs sound quality instead.
If battery life is a priority, the Sony XB33 is rated for 24 hours versus 12 hours for the Ultimate Ears Wonderboom 2.
Specifications Side By Side
| Sony XB33 | Ultimate Ears Wonderboom 2 | |
|---|---|---|
| Price | $110 | $80 |
| Ranked | #59 of 136 in Medium Size Portable Bluetooth Speakers | #86 of 136 in Medium Size Portable Bluetooth Speakers |
| App | Yes (Sony Music Connect App) | No |
| Aux Input | No | - |
| Bass Extension (-10dB) | 50Hz | 82Hz |
| Battery Life | 24 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC | - |
| Bluetooth Latency | 110ms | - |
| EQ | Yes (3 band) | No |
| IP Rating | IP67 | IP67 |
| Max Volume | 97dB | 88dB |
| Party Mode | Yes (Party Connect up to 100 speakers) | No |
| Power Bank | Yes (USB-A) | - |
| Stereo | Yes | No |
| Omnidirectional | No | Yes |
| Weight | 2.4 lbs / 1.1 kg | 0.9 lbs / 420 g |
| Bluetooth Version | 5.0 | 5.1 |
| Dimensions | 9.7" x 3.8" x 4.2" (246 x 97 x 106 mm) | 4.1" x 3.8" (104 x 95.3 mm) |
| Output Power | 16W RMS | - |
| Drivers | 2x 48x70mm X-Balanced racetrack drivers + 2x passive radiators | 2x 40mm active drivers + 2x passive radiators |
| Digital Aux Input | No | No |
| Power Input | - | Micro USB |
| TWS | - | Yes |
| Built in Microphone | - | No |
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Prices on this page were last checked August 27, 2026 at 10:09 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 eBay
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.
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.
Full Sony XB33 review and specifications →
| App | Yes (Sony Music Connect App) |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 50Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| 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 |
| Max Volume | 97dB |
| Omnidirectional | No |
| Output Power | 16W RMS |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A) |
| Stereo | Yes |
| Weight | 2.4 lbs / 1.1 kg |
- Links
- Reviews, Comparisons and Sound Samples
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- Reddit Search for Sony XB33 Review
- Head-to-Head Comparisons
Ultimate Ears Wonderboom 2: $80 Amazon eBay
Pros: IP67 rated and floats. Compact and light enough to toss in a bag.
Cons: Not stereo, barely any bass, recessed treble. Slightly boosted 93hz upper bass Dip at 9khz. You can tell from the micro USB that they are just feeding you the same crap hardware over and over, this is inexcusable for a product released in 2019. Not technically a 360 speaker, only front and rear.
Full Ultimate Ears Wonderboom 2 review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 82Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Version | 5.1 |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 4.1" x 3.8" (104 x 95.3 mm) |
| Drivers | 2x 40mm active drivers + 2x passive radiators |
| EQ | No |
| IP Rating | IP67 |
| Max Volume | 88dB |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Input | Micro USB |
| Stereo | No |
| TWS | Yes |
| Weight | 0.9 lbs / 420 g |
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