Short answer: the EarFun Uboom L. It ranks #2 of 177 medium speakers by sound quality, rated 4.6/5, at $49.79; the B&O Beosound A1 2nd gen ranks #11, rated 4.3/5, and costs $395, which makes this an easy call rather than a real tradeoff.
The EarFun Uboom L is the louder option. A great value medium speaker with clear, natural sound, waterproofing, and a Video Mode that keeps audio in sync with video. Alan Ross Reviews measured it at 103dB at full volume, against 93dB for the B&O Beosound A1 2nd gen. It keeps a wired aux input, which the B&O Beosound A1 2nd gen lacks. It plays in stereo from a single unit, unlike the B&O Beosound A1 2nd gen. Watch for: It cannot produce real low-bass rumble or fill a large, noisy space, and the top end loses some detail.
What the B&O Beosound A1 2nd gen does well: A premium waterproof puck speaker with balanced sound, a built in strap, and a long battery for travel. It supports aptX Adaptive Bluetooth, which the EarFun Uboom L lacks.
Buy the EarFun Uboom L. It is rated higher for sound quality than the B&O Beosound A1 2nd gen and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A great value medium speaker with clear, natural sound, waterproofing, and a Video Mode that keeps audio in sync with video.
A premium waterproof puck speaker with balanced sound, a built in strap, and a long battery for travel.
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Specifications Side By Side
| EarFun Uboom L | B&O Beosound A1 2nd gen | |
|---|---|---|
| Price | $49.79 after coupon UBOOMLWC | $395.00 |
| Ranked | #2 of 177 in Medium Size Portable Bluetooth Speakers | #11 of 177 in Medium Size Portable Bluetooth Speakers |
| App | Yes (firmware >= 1.2.6) | Yes |
| Aux Input | Yes | No |
| Aux Latency | 216ms | - |
| Bass Extension (-10dB) | 56Hz | 58Hz |
| Battery Life | 16 hours (Manufacturer specified) | 18 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC, AAC, aptX Adaptive |
| Built-in Microphone | Yes | Yes |
| EQ | Yes (10 band, firmware >= 1.2.6) | Yes |
| IP Rating | IP67 | IP67 |
| Bluetooth Latency | 400ms normal / 66ms low latency mode | 90ms |
| Maximum SPL | 103dB (measured by Alan Ross Reviews) | 93dB (measured by Alan Ross Reviews) |
| Party Mode | No | - |
| Power Bank | No | No |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | Pointing up |
| TWS | Yes | Yes |
| Weight | 1.4 lbs (650 g) | 1.2 lbs (558 g) |
| Bluetooth Version | 5.0 | 5.1 |
| Dimensions | 3.1” x 8.3” x 2.8” (78 x 210 x 72 mm) | 5.2”W x 5.2”D x 1.8”H (133 x 133 x 46 mm) |
| Drivers | 2x 55mm drivers + 2x passive radiators | 3.5mm aluminium driver + 0.75 inch silk dome tweeter |
| Amplifier Power | 28W | 60W total (2x 30W Class D) |
| Digital Aux Input | No | Yes (USB-C) |
| Strap | - | Yes (built-in strap) |
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