Short answer: the Ultimate Ears Boom 3, though neither ranks well in its class. It ranks #113 of 177 medium speakers by sound quality (rated 2.9/5) at $132.99 and is still sold new; the Xdobo X8 ranks #158 (rated 2.3/5) and is discontinued, so it is only an option used. Both are rated below 3.0/5 among the 177 medium speakers; for better sound, the EarFun Uboom L ranks #2 at $49.79.
The Xdobo X8 is the deeper-bass option. A cheap splash resistant speaker that plays loud for background music outdoors, with aux and microSD playback. Its bass reaches about 65Hz before falling 10dB, against 91Hz for the Ultimate Ears Boom 3. It keeps a wired aux input, which the Ultimate Ears Boom 3 lacks. It charges over USB-C rather than Micro USB. The tradeoff: The single full-range driver is the limitation.
The Ultimate Ears Boom 3 is the better-sounding, lighter choice. A rugged waterproof speaker that floats, with a fabric shell, a stable Bluetooth connection and PartyUp linking for many speakers. At 1.3 lbs (608 g) it weighs noticeably less than the Xdobo X8 at 1.9 lbs (860 g). It is rated IP67 against IPX5 for the Xdobo X8. It plays in stereo from a single unit, unlike the Xdobo X8. Watch for: Not stereo, barely any bass, recessed treble.
Buy the Ultimate Ears Boom 3. It is rated higher for sound quality; the Xdobo X8 is no longer sold new.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A cheap splash resistant speaker that plays loud for background music outdoors, with aux and microSD playback.
A rugged waterproof speaker that floats, with a fabric shell, a stable Bluetooth connection and PartyUp linking for many speakers.
Prices on this page were last checked October 31, 2026 at 7:11 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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Specifications Side By Side
| Xdobo X8 | Ultimate Ears Boom 3 | |
|---|---|---|
| Price | $35 Discontinued | $132.99 |
| Ranked | #158 of 177 in Medium Size Portable Bluetooth Speakers | #113 of 177 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | No |
| Bass Extension (-10dB) | ~65Hz | 91Hz |
| Battery Life | 15 hours (Manufacturer specified) | 15 hours (Manufacturer specified) |
| MicroSD Playback | Yes | - |
| Weight | 1.9 lbs (860 g) | 1.3 lbs (608 g) |
| IP Rating | IPX5 | IP67 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 4.2 |
| Dimensions | 8.7” x 3.7” x 2.8” (220 x 95 x 72 mm) | 7.2” x 2.9” (184 x 73 mm) |
| Drivers | 66mm full-range driver | 2x 2” active drivers + 2x 2” x 4” passive radiators |
| TWS | Yes | Yes |
| Built-in Microphone | Yes | No |
| Power Input | USB-C | Micro USB |
| Amplifier Power | 60W | - |
| Digital Aux Input | No | No |
| Omnidirectional | No | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| App | No | Yes (Ultimate Ears BOOM & MEGABOOM app) |
| EQ | Yes (multiple modes) | Yes (via app) |
| Stereo | No | Yes |
| Party Mode | - | Yes (PartyUp up to 50 speakers) |
| Maximum SPL | - | 87dB (Manufacturer specified) |
| Strap | - | Yes (built-in loop) |
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