Short answer: the Bose Soundlink Flex 2nd gen. It ranks #37 of 172 medium speakers by sound quality, rated 3.8/5, at $159. The DBSONO X-Blast F37 ranks #114, rated 2.8/5, at $69.99, $89.01 cheaper, which does not close the gap in sound quality.
The Bose Soundlink Flex 2nd gen is the better-sounding, longer-running option. A very portable 1.3 lbs (586 g), IP67-rated speaker with a clear, well-balanced midrange that keeps voices and instruments intelligible. It is rated for 12 hours of battery against 8 for the DBSONO X-Blast F37. At 1.3 lbs (586 g) it weighs noticeably less than the DBSONO X-Blast F37 at 1.7 lbs (771 g). It is rated IP67 against IPX5 for the DBSONO X-Blast F37. The tradeoff: One Flex remains mono and cannot deliver genuine low-bass rumble; RTINGS also found the elevated treble can turn hi-hats and other high-frequency detail piercing.
The case for the DBSONO X-Blast F37: 25W woofer + 10W tweeter + rear passive radiator. The tradeoff: Very recessed lower mids, peaky upper mids, just not a great frequency response overall.
Buy the Bose Soundlink Flex 2nd gen. It is rated higher for sound quality, and the $89.01 saving on the DBSONO X-Blast F37 is not enough to make up the difference.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A very portable 586g, IP67-rated speaker with a clear, well-balanced midrange that keeps voices and instruments intelligible.
Amazon $159.00 eBay
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Specifications Side By Side
| Bose Soundlink Flex 2nd gen | DBSONO X-Blast F37 | |
|---|---|---|
| Price | $159.00 | $69.99 |
| Ranked | #37 of 172 in Medium Size Portable Bluetooth Speakers | #114 of 172 in Medium Size Portable Bluetooth Speakers |
| App | Yes | - |
| Battery Life | 12 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Built-in Microphone | Yes | - |
| EQ | Yes (3 band) | Yes (Bass Boost) |
| IP Rating | IP67 | IPX5 |
| Party Mode | Yes (Bose Party mode) | - |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.3 lbs (586 g) | 1.7 lbs (771 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 6.0 |
| Dimensions | 7.9” x 3.5” x 2” (201 x 90 x 52 mm) | 8” x 2.5” x 3.6” (202 x 64 x 90.9 mm) |
| Aux Input | No | No |
| Drivers | 60mm full-range driver with passive radiators | 25W woofer, 10W tweeter, passive radiator |
| Bluetooth Codecs | SBC, AAC, aptX Adaptive | SBC (inferred; additional codecs unverified) |
| Digital Aux Input | No | No |
| Strap | Yes (built-in loop) | - |
| Bass Extension (-10dB) | - | 49Hz |
| Frequency Response | - | 100Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | - | 35W |
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