Short answer: the EarFun Uboom L. It ranks #2 of 177 medium speakers by sound quality, rated 4.6/5, at $49.79; the Xiaomi Sound Outdoor ranks #46, rated 3.7/5, and costs $49.99, so there is little reason to consider the other one.
What the Xiaomi Sound Outdoor does well: An affordable waterproof outdoor speaker with a separate tweeter, decent battery life and linking to many more speakers. It links with other speakers (Speakersync, up to 100 speakers), which the EarFun Uboom L cannot. The tradeoff: Bass reach is limited for the cabinet size, with a rated lower limit of 60Hz, and the boosted bass gets somewhat uncontrolled at high levels.
The EarFun Uboom L is the better-sounding, longer-running pick. A great value medium speaker with clear, natural sound, waterproofing, and a Video Mode that keeps audio in sync with video. It is rated for 16 hours of battery against 12 for the Xiaomi Sound Outdoor. It keeps a wired aux input, which the Xiaomi Sound Outdoor lacks. It has an adjustable EQ, which the Xiaomi Sound Outdoor lacks. Watch for: It cannot produce real low-bass rumble or fill a large, noisy space, and the top end loses some detail.
Buy the EarFun Uboom L. It is rated higher for sound quality than the Xiaomi Sound Outdoor and costs less, so only choose the other one for a particular feature it does better.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
An affordable waterproof outdoor speaker with a separate tweeter, decent battery life and linking to many more speakers.
A great value medium speaker with clear, natural sound, waterproofing, and a Video Mode that keeps audio in sync with video.
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Specifications Side By Side
| Xiaomi Sound Outdoor | EarFun Uboom L | |
|---|---|---|
| Price | $49.99 | $49.79 after coupon UBOOMLWC |
| Ranked | #46 of 177 in Medium Size Portable Bluetooth Speakers | #2 of 177 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes (firmware >= 1.2.6) |
| Battery Life | 12 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | No | Yes (10 band, firmware >= 1.2.6) |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (Speakersync, up to 100 speakers) | No |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.3 lbs (597 g) | 1.4 lbs (650 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.4 | 5.0 |
| Dimensions | 7.7” x 2.7” x 2.6” (196.6 x 68 x 66 mm) | 3.1” x 8.3” x 2.8” (78 x 210 x 72 mm) |
| Drivers | 20W woofer, 10W tweeter + 2x passive radiators | 2x 55mm drivers + 2x passive radiators |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 30W | 28W |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | AAC, SBC |
| Aux Input | No | Yes |
| Aux Latency | - | 216ms |
| Bass Extension (-10dB) | - | 56Hz |
| Bluetooth Latency | - | 400ms normal / 66ms low latency mode |
| Maximum SPL | - | 103dB (measured by Alan Ross Reviews) |
| Power Bank | - | No |
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