Short answer: the B&O Beosound A1 2nd gen. It ranks #11 of 177 medium speakers by sound quality, rated 4.3/5, at $395. The Harman Kardon Luna ranks #26, rated 4.0/5, at $290.99, $104.01 cheaper, a saving that is not big enough to make up the sound-quality gap.
What the Harman Kardon Luna does well: A fully waterproof speaker with fairly balanced, bass rich sound, a separate tweeter, and stereo pairing with a second unit. Watch for: Bass is limited by its 57Hz specification.
The B&O Beosound A1 2nd gen is the longer-running, lighter option. A premium waterproof puck speaker with balanced sound, a built in strap, and a long battery for travel. It is rated for 18 hours of battery against 12 for the Harman Kardon Luna. At 1.2 lbs (558 g) it weighs much less than the Harman Kardon Luna at 2.5 lbs (1.13 kg). It supports aptX Adaptive Bluetooth, which the Harman Kardon Luna lacks.
Buy the B&O Beosound A1 2nd gen. It is rated higher for sound quality, and the $104.01 you would save on the Harman Kardon Luna does not close the gap.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A fully waterproof speaker with fairly balanced, bass rich sound, a separate tweeter, and stereo pairing with a second unit.
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
| Harman Kardon Luna | B&O Beosound A1 2nd gen | |
|---|---|---|
| Price | $290.99 | $395.00 |
| Ranked | #26 of 177 in Medium Size Portable Bluetooth Speakers | #11 of 177 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes |
| Aux Input | No | No |
| Bass Extension (-10dB) | 57Hz | 58Hz |
| Battery Life | 12 hours (Manufacturer specified) | 18 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, aptX Adaptive |
| EQ | No | Yes |
| IP Rating | IP67 | IP67 |
| MicroSD Playback | No | - |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | No | Pointing up |
| TWS | Yes | Yes |
| USB Playback | Yes | - |
| Weight | 2.5 lbs (1.13 kg) | 1.2 lbs (558 g) |
| Bluetooth Version | 5.3 | 5.1 |
| Dimensions | 8.3” x 3.1” x 3.1” (210 x 78 x 80 mm) | 5.2”W x 5.2”D x 1.8”H (133 x 133 x 46 mm) |
| Drivers | 48mm x 90mm woofer, 20mm tweeter | 3.5mm aluminium driver + 0.75 inch silk dome tweeter |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 40W | 60W total (2x 30W Class D) |
| Digital Aux Input | No | Yes (USB-C) |
| Built-in Microphone | - | Yes |
| Bluetooth Latency | - | 90ms |
| Maximum SPL | - | 93dB (measured by Alan Ross Reviews) |
| Power Bank | - | No |
| Strap | - | Yes (built-in strap) |
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