Short answer: the Ultimate Ears Wonderboom 4, though neither ranks well in its class. It ranks #109 of 179 medium speakers by sound quality, rated 2.9/5, at $64.99. The DOSS Soundbox Pro ranks #171, rated 2.1/5, at $29.99, $35 cheaper, a saving that is not big enough to make up the sound-quality gap. Both are rated below 3.0/5 among the 179 medium speakers; for better sound, the EarFun Uboom L ranks #2 at $49.79.
The Ultimate Ears Wonderboom 4 is the better-sounding, lighter option. A small, tough waterproof speaker with a strap loop and USB-C charging, easy to clip on a bag for outdoor trips. At 0.9 lbs (420 g) it weighs noticeably less than the DOSS Soundbox Pro at 1.2 lbs (558 g). It charges over USB-C rather than Micro USB. The tradeoff: Bass isn’t as deep as the top-ranked speakers and is a little thuddy.
The DOSS Soundbox Pro is the longer-running option. An inexpensive water resistant stereo speaker with an extra bass button, LED lights, a long rated battery and an aux input. It is rated for 20 hours of battery against 14 for the Ultimate Ears Wonderboom 4. It keeps a wired aux input, which the Ultimate Ears Wonderboom 4 lacks. It has an adjustable EQ, which the Ultimate Ears Wonderboom 4 lacks. The tradeoff: Barely any bass.
Buy the Ultimate Ears Wonderboom 4. It is rated higher for sound quality, and the $35 you would save on the DOSS Soundbox Pro does not close the gap.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| Ultimate Ears Wonderboom 4 | DOSS Soundbox Pro | |
|---|---|---|
| Price | $64.99 | $29.99 |
| Ranked | #109 of 179 in Medium Size Portable Bluetooth Speakers | #171 of 179 in Medium Size Portable Bluetooth Speakers |
| Battery Life | 14 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Maximum SPL | 87dB (Manufacturer specified) | - |
| Power Input | USB-C | Micro USB |
| Stereo | No | Yes |
| Omnidirectional | Yes | No |
| Weight | 0.9 lbs (420 g) | 1.2 lbs (558 g) |
| IP Rating | IP67 | IPX6 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.2 | 5.0 |
| Dimensions | 4.1” x 3.8” (104 x 95.3 mm) | 7.8” x 3” x 3” (197 x 75 x 75 mm) |
| Drivers | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) | 52mm dual woofers + passive radiators |
| TWS | Yes | Yes |
| Party Mode | No | - |
| App | No | No |
| EQ | No | Yes (extra bass button) |
| Built-in Microphone | No | Yes |
| Power Bank | No | - |
| Aux Input | No | Yes |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Strap | Yes (built-in loop) | - |
| MicroSD Playback | - | Yes |
| Amplifier Power | - | 20W |
| Lights | - | Yes |
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