Short answer: the Harman Kardon Luna. It ranks #24 of 150 medium speakers by sound quality (rated 4.0/5); the Boat Stone 350/352/358 ranks #130 (rated 2.3/5).
Why pick the Harman Kardon Luna: Harman Kardon Luna uses 48mm x 90mm woofer, 20mm tweeter. Watch for: Bass is limited by its 57Hz specification.
What the Boat Stone 350/352/358 does well: Long battery life (12 hours), IPX5 water resistant, compact and portable, sturdy build, dual passive radiators. Watch for: Some midrange peaks, treble slightly rolled off.
Buy the Harman Kardon Luna. It is rated higher for sound quality than the Boat Stone 350/352/358.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Harman Kardon Luna | Boat Stone 350/352/358 | |
|---|---|---|
| Price | $290.99 | $15 |
| Ranked | #24 of 150 in Medium Size Portable Bluetooth Speakers | #130 of 150 in Medium Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 57Hz | 87Hz |
| Battery Life | 12 hours (Manufacturer specified) | 6 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| EQ | No | Yes (multiple modes) |
| IP Rating | IP67 | IPX7 |
| MicroSD Playback | No | Yes |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | - |
| Weight | 2.5 lbs (1.13 kg) | 0.9 lbs (426 g) |
| Bluetooth Version | 5.3 | 5.0 |
| Dimensions | 8.3” x 3.1” x 3.1” (210 x 78 x 80 mm) | 3.5” x 7.1” (90 x 180 mm) |
| Drivers | 48mm x 90mm woofer, 20mm tweeter | 2x 20mm tweeters + 2x 45mm drivers |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 40W | 10W |
| Digital Aux Input | No | No |
| Built-in Microphone | - | Yes |
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- Soundcore Motion 300 vs Harman Kardon Luna
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Prices on this page were last checked September 30, 2026 at 2:57 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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The Two Speakers In Full
Harman Kardon Luna: $290.99 Amazon eBay
Newer model: the Harman Kardon Luna 2, ranked higher, rated 4.1/5.
Pros: Harman Kardon Luna uses 48mm x 90mm woofer, 20mm tweeter. Its 1.13 kg, claimed 12 hours (Manufacturer specified) battery life, IP67 protection and mono playback make it a practical option for its intended room or portable use. The sound is fairly balanced apart from the boosted bass. Measured bass extension of 57Hz (-10dB).
Cons: Bass is limited by its 57Hz specification. There is no companion app. No EQ adjustment. Boosted bass, and less detailed than higher-ranked speakers.
Full Harman Kardon Luna review and specifications →
| Amplifier Power | 40W |
|---|---|
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 57Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Digital Aux Input | No |
| Dimensions | 8.3” x 3.1” x 3.1” (210 x 78 x 80 mm) |
| Drivers | 48mm x 90mm woofer, 20mm tweeter |
| EQ | No |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP67 |
| MicroSD Playback | No |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 2.5 lbs (1.13 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Harman Kardon Luna vs Harman Kardon Luna 2
- Harman Kardon Luna vs Bogasing G4
- Harman Kardon Luna vs Tribit Maxsound Plus/Thunderbox Plus
- Harman Kardon Luna vs JBL Charge 5 Wifi
- Harman Kardon Luna vs Tribit Xsound Mega
- Harman Kardon Luna vs JBL Charge 5
- Harman Kardon Luna vs Xiaomi Sound Party
- Harman Kardon Luna vs Soundcore Boom 3i
- See all 129 comparisons
Boat Stone 350/352/358: $15 Amazon eBay
Pros: Long battery life (12 hours), IPX5 water resistant, compact and portable, sturdy build, dual passive radiators. Measured bass extension of 87Hz (-10dB).
Cons: Some midrange peaks, treble slightly rolled off. Not much bass. Same hardware as the Dayton Audio Boost
Full Boat Stone 350/352/358 review and specifications →
| Amplifier Power | 10W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 87Hz |
| Battery Life | 6 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 3.5” x 7.1” (90 x 180 mm) |
| Drivers | 2x 20mm tweeters + 2x 45mm drivers |
| EQ | Yes (multiple modes) |
| IP Rating | IPX7 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 0.9 lbs (426 g) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
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