Short answer: the Xiaomi Sound Party. It ranks #20 of 177 medium speakers by sound quality, rated 4.1/5, at $149.99; the Ultimate Ears Megaboom 3 ranks #107, rated 3.0/5, and costs $191.99, so there is little reason to consider the other one.
The Xiaomi Sound Party is the better-sounding, deeper-bass choice. A versatile outdoor speaker with warm, balanced sound, fully waterproof build, long battery life, a phone charging port and a handy retractable handle. Its bass reaches about 54Hz before falling 10dB, against 70Hz for the Ultimate Ears Megaboom 3. Alan Ross Reviews measured it at 102dB at full volume, against 98dB for the Ultimate Ears Megaboom 3. It is rated for 26 hours of battery against 20 for the Ultimate Ears Megaboom 3. The catch: The sound evidence is mixed rather than universally glowing.
The Ultimate Ears Megaboom 3 is the lighter option. A tough waterproof speaker that floats and shrugs off drops, with a long 20 hour battery for beach and pool days. At 2 lbs (925 g) it weighs noticeably less than the Xiaomi Sound Party at 2.6 lbs (1.2 kg). The tradeoff: Not stereo, barely any bass.
Buy the Xiaomi Sound Party. It is rated higher for sound quality than the Ultimate Ears Megaboom 3 and costs less, which makes it the one to get unless you need something the other one does better.
Want more options? Browse the full Portable Bluetooth rankings.
A versatile outdoor speaker with warm, balanced sound, fully waterproof build, long battery life, a phone charging port and a handy retractable handle.
A tough waterproof speaker that floats and shrugs off drops, with a long 20 hour battery for beach and pool days.
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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Xiaomi Sound Party | Ultimate Ears Megaboom 3 | |
|---|---|---|
| Price | $149.99 | $191.99 |
| Ranked | #20 of 177 in Medium Size Portable Bluetooth Speakers | #107 of 177 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes (UE | BOOM app) |
| Aux Input | No | No |
| Bass Extension (-10dB) | 54Hz | 70Hz |
| Battery Life | 26 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Built-in Microphone | Yes | - |
| EQ | Yes | Yes (App EQ) |
| IP Rating | IP67 | IPX7 |
| Party Mode | Yes (Party Connect, up to 100 speakers) | Yes (PartyUp up to 50 speakers) |
| Power Bank | Yes (USB-C, 5V/3A) | - |
| Stereo | No | No |
| Omnidirectional | No | Yes |
| TWS | Yes | Yes |
| Digital Aux Input | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Bluetooth Version | 5.4 | 4.2 |
| Dimensions | 10” x 3.6” x 3.6” (255 x 92 x 92 mm) | 3.4” x 8.9” x 3.4” (87 x 225 x 87 mm) |
| Drivers | 2x 40mm woofers (35W total) + 2x 15mm tweeters | 2x 50mm fullrange |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | 60Hz - 20kHz (Manufacturer specified) |
| Maximum SPL | 102dB (measured by Alan Ross Reviews) | 98dB (measured by Alan Ross Reviews) |
| Weight | 2.6 lbs (1200 g) | 2 lbs (925 g) |
| Amplifier Power | 50W | - |
| Power Input | USB-C (5V/3A, 9V/2A, 12V/2A) | Micro USB |
| Lights | Yes | - |
| Strap | Yes (detachable strap) | Yes (built-in loop) |
Related Speaker Comparisons
More worthwhile head-to-heads for Xiaomi Sound Party: