Short answer: the EarFun Uboom L. It ranks #2 of 177 medium speakers by sound quality, rated 4.6/5, at $49.79; the Soundcore Boom 3i ranks #31, rated 4.0/5, and costs $118.99, which makes this an easy call rather than a real tradeoff.
Why pick the Soundcore Boom 3i: A warm, punchy waterproof speaker that sounds great and is a strong value. The catch: Not quite as good as a JBL Charge 5, doesn’t go quite as loud or sound quite as balanced, but very very close.
The EarFun Uboom L is the better-sounding choice. A great value medium speaker with clear, natural sound, waterproofing, and a Video Mode that keeps audio in sync with video. It keeps a wired aux input, which the Soundcore Boom 3i lacks. It plays in stereo from a single unit, unlike the Soundcore Boom 3i. The catch: 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 Soundcore Boom 3i and costs less, which makes it the one to get unless you need something the other one does better.
Looking for alternatives? See the complete Portable Bluetooth rankings.
A warm, punchy waterproof speaker that sounds great and is a strong value.
A great value medium speaker with clear, natural sound, waterproofing, and a Video Mode that keeps audio in sync with video.
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
| Soundcore Boom 3i | EarFun Uboom L | |
|---|---|---|
| Price | $118.99 | $49.79 after coupon UBOOMLWC |
| Ranked | #31 of 177 in Medium Size Portable Bluetooth Speakers | #2 of 177 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes (firmware >= 1.2.6) |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 56Hz | 56Hz |
| Battery Life | 16 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| EQ | Yes | Yes (10 band, firmware >= 1.2.6) |
| IP Rating | IP68 | IP67 |
| Party Mode | No | No |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.0 |
| Dimensions | 8.3” x 3.3” x 3.1” (210 x 85 x 78.5 mm) | 3.1” x 8.3” x 2.8” (78 x 210 x 72 mm) |
| Drivers | 94mm woofer + tweeter | 2x 55mm drivers + 2x passive radiators |
| Weight | 1.7 lbs (783 g) | 1.4 lbs (650 g) |
| Amplifier Power | 50W | 28W |
| Bluetooth Codecs | SBC, AAC | AAC, SBC |
| Built-in Microphone | Yes | Yes |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Strap | Yes (detachable strap) | - |
| Aux Latency | - | 216ms |
| Bluetooth Latency | - | 400ms normal / 66ms low latency mode |
| Maximum SPL | - | 103dB (measured by Alan Ross Reviews) |
| Power Bank | - | No |
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