Short answer: the Harman Kardon Luna for better sound quality, the DBSONO X-Blast F37 for the lower price. The Harman Kardon Luna ranks #26 of 179 medium speakers, rated 4.0/5, at $290.99. The DBSONO X-Blast F37 ranks #117, rated 2.8/5, at $69.99, $221 cheaper.
The Harman Kardon Luna is the better-sounding, longer-running option. A fully waterproof speaker with fairly balanced, bass rich sound, a separate tweeter, and stereo pairing with a second unit. It is rated for 12 hours of battery against 8 for the DBSONO X-Blast F37. It is rated IP67 against IPX5 for the DBSONO X-Blast F37. Watch for: Boosted bass, and less detailed than higher-ranked speakers.
The DBSONO X-Blast F37 is the deeper-bass, lighter option. An affordable splash resistant speaker with a separate woofer and tweeter, long Bluetooth range and stereo pairing. Its bass reaches about 49Hz before falling 10dB, against 57Hz for the Harman Kardon Luna. At 1.7 lbs (771 g) it weighs noticeably less than the Harman Kardon Luna at 2.5 lbs (1.13 kg). It has an adjustable EQ, which the Harman Kardon Luna lacks. Watch for: Very recessed lower mids, peaky upper mids, just not a great frequency response overall.
Buy the Harman Kardon Luna if sound quality is the priority over the price, or the DBSONO X-Blast F37 if the price is the priority over sound quality.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Prices on this page were last checked November 7, 2026 at 7:34 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
| Harman Kardon Luna | DBSONO X-Blast F37 | |
|---|---|---|
| Price | $290.99 | $69.99 |
| Ranked | #26 of 179 in Medium Size Portable Bluetooth Speakers | #117 of 179 in Medium Size Portable Bluetooth Speakers |
| App | No | - |
| Aux Input | No | No |
| Bass Extension (-10dB) | 57Hz | 49Hz |
| Battery Life | 12 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| EQ | No | Yes (Bass Boost) |
| IP Rating | IP67 | IPX5 |
| MicroSD Playback | No | - |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | - |
| Weight | 2.5 lbs (1.13 kg) | 1.7 lbs (771 g) |
| Bluetooth Version | 5.3 | 6.0 |
| Dimensions | 8.3” x 3.1” x 3.1” (210 x 78 x 80 mm) | 8” x 2.5” x 3.6” (202 x 64 x 90.9 mm) |
| Drivers | 48mm x 90mm woofer, 20mm tweeter | 25W woofer, 10W tweeter, passive radiator |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | 100Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 40W | 35W |
| Digital Aux Input | No | No |
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