Short answer: the Tribit Xsound Plus 2. It ranks #36 of 179 medium speakers by sound quality (rated 3.9/5) at $64.99 and is still sold new; the EarFun Uboom Slim ranks #43 (rated 3.7/5) and is discontinued, so it is only an option used.
The Tribit Xsound Plus 2 is the deeper-bass, longer-running pick. An affordable waterproof stereo speaker with long battery life and an app EQ that can tune it to sound well balanced. Its bass reaches about 55Hz before falling 10dB, against 63Hz for the EarFun Uboom Slim. It is rated for 24 hours of battery against 16 for the EarFun Uboom Slim. It supports AAC Bluetooth, which the EarFun Uboom Slim lacks. Watch for: Boosted treble, boosted bass in the factory EQs.
The EarFun Uboom Slim is the lighter option. A slim, affordable waterproof stereo speaker with long battery life that doubles as a speakerphone. At 1.2 lbs (560 g) it weighs noticeably less than the Tribit Xsound Plus 2 at 1.8 lbs (798 g). The tradeoff: Not as deep bass as others.
Buy the Tribit Xsound Plus 2. It is rated higher for sound quality, and the EarFun Uboom Slim is discontinued, so it is only available used.
Want more options? Browse the full Portable Bluetooth rankings.
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Specifications Side By Side
| Tribit Xsound Plus 2 | EarFun Uboom Slim | |
|---|---|---|
| Price | $64.99 | $79 Discontinued |
| Ranked | #36 of 179 in Medium Size Portable Bluetooth Speakers | #43 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Aux Latency | 16ms | - |
| Battery Life | 24 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| EQ | Yes | No |
| Bluetooth Latency | SBC 233ms, AAC 240ms | - |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) | - |
| Party Mode | No | - |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.8 lbs (798 g) | 1.2 lbs (560 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.2 |
| Dimensions | 7.8” x 2.8” x 2.6” (198 x 71 x 66 mm) | 2.6”H x 7.1”W x 2.6”D (65 x 180 x 65 mm) |
| IP Rating | IPX7 | IPX7 |
| Amplifier Power | 30W | 20W |
| Bass Extension (-10dB) | 55Hz | ~63Hz |
| Built-in Microphone | Yes | Yes |
| Drivers | 2x 45mm neodymium full-range drivers | 45mm speaker drivers |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC, AAC | SBC |
| Strap | Yes (strap) | - |
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