Short answer: the Ultimate Ears Wonderboom 2, mainly on price and water protection, though neither ranks well in its class. It is IP67 rated and floats and costs $49 less, though it is not stereo, has barely any bass and recessed treble. The Sony SRS-XB20 is IPX5 rated with a pill shape that slides easily into a bag, but it sounds thin at higher volumes. Both are rated below 3.0/5 among the 164 medium speakers; for better sound, the Earfun Uboom L ranks #2 at $49.79.
Buy the Ultimate Ears Wonderboom 2. It is rated higher for sound quality; the Sony SRS-XB20 is no longer sold new.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Sony SRS-XB20 | Ultimate Ears Wonderboom 2 | |
|---|---|---|
| Price | $129 Discontinued | $80 |
| Ranked | #117 of 164 in Medium Size Portable Bluetooth Speakers | #108 of 164 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | No |
| Battery Life | 12 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Party Mode | Yes (Partychain up to 100 speakers) | No |
| Weight | 1.3 lbs (590 g) | 0.9 lbs (420 g) |
| IP Rating | IPX5 | IP67 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.2 | 5.1 |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC |
| Dimensions | 7.8” x 2.7” x 2.7” (198 x 68 x 69 mm) | 4.1” x 3.8” (104 x 95.3 mm) |
| TWS | Yes | Yes |
| Stereo | Yes | No |
| Omnidirectional | No | Yes |
| App | Yes (SongPal) | No |
| EQ | No | No |
| Built-in Microphone | Yes | No |
| Power Input | Micro USB | Micro USB |
| Power Bank | No | - |
| Amplifier Power | 20W | - |
| Drivers | 2x 42mm full-range drivers + 2x passive radiators | 2x 40mm active drivers + 2x passive radiators |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | 82Hz |
| Maximum SPL | - | 88dB (measured by Alan Ross Reviews) |
| Strap | - | Yes (built-in loop) |
Related Speaker Comparisons
How Ultimate Ears Wonderboom 2 compares with other leading options:
- Earfun Uboom L vs Ultimate Ears Wonderboom 2
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- Soundcore Boost “upgraded” 2021 vs Ultimate Ears Wonderboom 2
- Minirig 4 vs Ultimate Ears Wonderboom 2
Prices on this page were last checked October 4, 2026 at 9:58 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 SRS-XB20: $129 Discontinued eBay
Newer model: the Sony ULT Field 1, ranked higher, rated 3.1/5.
Pros: Sony SRS-XB20 uses 2x 42mm full-range drivers + 2x passive radiators. Its 590 g, claimed 12 hours (Manufacturer specified) battery life, IPX5 protection, aux input and stereo playback make it a practical option for its intended room or portable use.
Cons: No EQ adjustment. Sounds thin at higher volumes. Discontinued.
Full Sony SRS-XB20 review and specifications →
| Amplifier Power | 20W |
|---|---|
| App | Yes (SongPal) |
| Aux Input | Yes |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 7.8” x 2.7” x 2.7” (198 x 68 x 69 mm) |
| Drivers | 2x 42mm full-range drivers + 2x passive radiators |
| EQ | No |
| IP Rating | IPX5 |
| Omnidirectional | No |
| Party Mode | Yes (Partychain up to 100 speakers) |
| Power Bank | No |
| Power Input | Micro USB |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.3 lbs (590 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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Ultimate Ears Wonderboom 2: $80 Amazon eBay
Newer model: the Ultimate Ears Wonderboom 4, ranked higher, rated 2.9/5.
Pros: IP67 rated and floats. Compact and light enough to toss in a bag. Measured bass extension of 82Hz (-10dB).
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 |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 82Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| 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 |
| Maximum SPL | 88dB (measured by Alan Ross Reviews) |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Input | Micro USB |
| Stereo | No |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 0.9 lbs (420 g) |
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- Head-to-Head Comparisons
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