Short answer: the Bose Soundlink Flex. It ranks #38 of 179 medium speakers by sound quality, rated 3.8/5, at $79.99. The DOSS E-Go II ranks #148, rated 2.5/5, at $39.90, $40.09 cheaper, not enough of a saving to outweigh the sound-quality gap.
The Bose Soundlink Flex is the better-sounding, deeper-bass choice. A small, rugged waterproof speaker that survives drops and floats, with a warm, bass forward sound for casual outdoor use. Its bass reaches about 56Hz before falling 10dB, against 120Hz for the DOSS E-Go II. It charges over USB-C rather than Micro USB. The tradeoff: Warm sounding with overly boosted bass which drowns out midrange detail.
The DOSS E-Go II is the lighter option. A water bottle sized stereo speaker with water resistance and quick pairing, light enough for a cup holder or bag. At 0.9 lbs (399 g) it weighs noticeably less than the Bose Soundlink Flex at 1.3 lbs (589 g). It keeps a wired aux input, which the Bose Soundlink Flex lacks. It plays in stereo from a single unit, unlike the Bose Soundlink Flex. Watch for: Horribly bad unless turned up, still not great.
Buy the Bose Soundlink Flex. It is rated higher for sound quality, and saving $40.09 with the DOSS E-Go II does not make up for the sound-quality gap.
Want more options? Browse the full Portable Bluetooth rankings.
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Specifications Side By Side
| Bose Soundlink Flex | DOSS E-Go II | |
|---|---|---|
| Price | $79.99 | $39.90 |
| Ranked | #38 of 179 in Medium Size Portable Bluetooth Speakers | #148 of 179 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Bass Extension (-10dB) | 56Hz | 120Hz |
| Battery Life | 12 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | No | No |
| IP Rating | IP67 | IPX6 |
| Bluetooth Latency | 33ms | - |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Bose Party mode) | - |
| Power Input | USB-C | Micro USB |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| Weight | 1.3 lbs (589 g) | 0.9 lbs (399 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.2 | 4.1 |
| Dimensions | 7.9” x 3.5” x 2” (201 x 90 x 52 mm) | 7.8” x 2.5” x 2” (198 x 63 x 51 mm) |
| Drivers | 1x 60mm full-range driver + 2x passive radiators | 2x 6W full-range drivers + 1x passive radiator |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Aux Input | No | Yes |
| Strap | Yes (built-in loop) | Yes (strap) |
| MicroSD Playback | - | Yes |
| Amplifier Power | - | 12W |
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