Short answer: the Harman Kardon Luna. It ranks #26 of 177 medium speakers by sound quality, rated 4.0/5, at $290.99. The LG Xboom Grab ranks #106, rated 3.0/5, at $100.98, $190.01 cheaper, which does not close the gap in sound quality.
The Harman Kardon Luna is the better-sounding, deeper-bass option. A fully waterproof speaker with fairly balanced, bass rich sound, a separate tweeter, and stereo pairing with a second unit. Its bass reaches about 57Hz before falling 10dB, against 75Hz for the LG Xboom Grab. The tradeoff: Boosted bass, and less detailed than higher-ranked speakers.
The LG Xboom Grab is the longer-running, lighter option. A rugged waterproof speaker with elastic mounting straps, a long 20 hour battery, multipoint pairing and app room calibration. It is rated for 20 hours of battery against 12 for the Harman Kardon Luna. At 1.5 lbs (680 g) it weighs much less than the Harman Kardon Luna at 2.5 lbs (1.13 kg). It supports AAC Bluetooth, which the Harman Kardon Luna lacks. Watch for: Bass extension not as deep as the top speakers.
Buy the Harman Kardon Luna. It is rated higher for sound quality, and the $190.01 you would save on the LG Xboom Grab 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 rugged waterproof speaker with elastic mounting straps, a long 20 hour battery, multipoint pairing and app room calibration.
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Specifications Side By Side
| Harman Kardon Luna | LG Xboom Grab | |
|---|---|---|
| Price | $290.99 | $100.98 |
| Ranked | #26 of 177 in Medium Size Portable Bluetooth Speakers | #106 of 177 in Medium Size Portable Bluetooth Speakers |
| App | No | Yes |
| Aux Input | No | No |
| Bass Extension (-10dB) | 57Hz | 75Hz |
| Battery Life | 12 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | AAC, SBC |
| 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 | No |
| USB Playback | Yes | - |
| Weight | 2.5 lbs (1.13 kg) | 1.5 lbs (680 g) |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 8.3” x 3.1” x 3.1” (210 x 78 x 80 mm) | 8.3” x 2.8” x 2.8” (211.0 x 71.6 x 70.0 mm) |
| Drivers | 48mm x 90mm woofer, 20mm tweeter | 1x 80x45mm racetrack woofer, 1x 16mm tweeter |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 40W | 30W |
| Digital Aux Input | No | No |
| Party Mode | - | Yes (Auracast) |
| Wi-Fi | - | No |
| Strap | - | Yes (mounting straps) |
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