Short answer: the Ultimate Ears Wonderboom 4, though neither ranks well in its class. It ranks #95 of 150 medium speakers by sound quality, rated 2.9/5, at $59.99; the DBSONO X-Blast F37 ranks #102, rated 2.8/5, and costs $69.99, which makes this an easy call rather than a real tradeoff. Both are rated below 3.0/5 among the 150 medium speakers, and the Earfun Uboom L, ranked #1 at $49.79, is a better place to start if sound quality matters.
What the Ultimate Ears Wonderboom 4 does well: Small size. The catch: Bass isn’t as deep as the top-ranked speakers and is a little thuddy.
Why pick 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 Ultimate Ears Wonderboom 4. It is rated higher for sound quality than the DBSONO X-Blast F37 and costs less, which makes it the one to get unless you need something the other one does better.
If battery life is a priority, the Ultimate Ears Wonderboom 4 is rated for 14 hours versus 8 hours for the DBSONO X-Blast F37.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Ultimate Ears Wonderboom 4 | DBSONO X-Blast F37 | |
|---|---|---|
| Price | $59.99 | $69.99 |
| Ranked | #95 of 150 in Medium Size Portable Bluetooth Speakers | #102 of 150 in Medium Size Portable Bluetooth Speakers |
| Battery Life | 14 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Maximum SPL | 87dB (Manufacturer specified) | - |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | Yes | No |
| Weight | 0.9 lbs (420 g) | 1.7 lbs (771 g) |
| IP Rating | IP67 | IPX5 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.2 | 6.0 |
| Dimensions | 4.1” x 3.8” (104 x 95.3 mm) | 8” x 2.5” x 3.6” (202 x 64 x 90.9 mm) |
| Drivers | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) | 25W woofer, 10W tweeter, passive radiator |
| TWS | Yes | Yes |
| Party Mode | No | - |
| App | No | - |
| EQ | No | Yes (Bass Boost) |
| Built-in Microphone | No | - |
| Power Bank | No | - |
| Aux Input | No | No |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Strap | Yes (built-in loop) | - |
| Bass Extension (-10dB) | - | 49Hz |
| Frequency Response | - | 100Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | - | 35W |
Related Speaker Comparisons
More worthwhile head-to-heads for Ultimate Ears Wonderboom 4:
- Ultimate Ears Wonderboom 4 vs Earfun Uboom L
- Ultimate Ears Wonderboom 4 vs Soundcore Motion 300
- Ultimate Ears Wonderboom 4 vs Soundcore Motion+
- Soundcore Boost “upgraded” 2021 vs Ultimate Ears Wonderboom 4
- Ultimate Ears Wonderboom 4 vs Minirig 4
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
Ultimate Ears Wonderboom 4: $59.99 Amazon eBay
Older models: the Ultimate Ears Wonderboom 3 (ranked lower, rated 2.9/5), the Ultimate Ears Wonderboom 2 (ranked lower, rated 2.9/5) and the Ultimate Ears Wonderboom (ranked lower, rated 2.9/5).
Pros: Small size.
Cons: Bass isn’t as deep as the top-ranked speakers and is a little thuddy. Not much improvement over the previous Ultimate Ears Wonderboom 3 besides the USB-C charging port.
Full Ultimate Ears Wonderboom 4 review and specifications →
| App | No |
|---|---|
| Aux Input | No |
| Battery Life | 14 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 4.1” x 3.8” (104 x 95.3 mm) |
| Drivers | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) |
| EQ | No |
| IP Rating | IP67 |
| Maximum SPL | 87dB (Manufacturer specified) |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 0.9 lbs (420 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Wonderboom 3
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Megaboom 3
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Wonderboom 2
- Ultimate Ears Wonderboom 4 vs LG Xboom Grab
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Wonderboom
- Ultimate Ears Wonderboom 4 vs Soundcore 2
- Ultimate Ears Wonderboom 4 vs Ultimate Ears Boom 4
- Ultimate Ears Wonderboom 4 vs Tribit Stormbox 2
- See all 132 comparisons
DBSONO X-Blast F37: $69.99 Amazon eBay
Pros: 25W woofer + 10W tweeter + rear passive radiator. Bluetooth 6.0 with a 30m range and TWS stereo pairing. IPX5 water resistance. Measured bass extension of 49Hz (-10dB).
Cons: Very recessed lower mids, peaky upper mids, just not a great frequency response overall.
Full DBSONO X-Blast F37 review and specifications →
| Amplifier Power | 35W |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 49Hz |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 6.0 |
| Digital Aux Input | No |
| Dimensions | 8” x 2.5” x 3.6” (202 x 64 x 90.9 mm) |
| Drivers | 25W woofer, 10W tweeter, passive radiator |
| EQ | Yes (Bass Boost) |
| Frequency Response | 100Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX5 |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 1.7 lbs (771 g) |
- Reviews, Comparisons and Sound Samples
- Alan Ross - The Anti Shill!: DBSONO X-Blast F37 vs Bose Soundlink Flex 2 - They all want to be me 😊 More from alanrossreviews →
- Alan Ross - The Anti Shill!: DBSONO X-Blast F37 vs Tribit StormBox Flow - Cheap But Cheerful? 🙈
- Alan Ross - The Anti Shill!: DBsono X-Blast F37 is warmer than the Bahamas in a heatwave!
- Head-to-Head Comparisons
- DBSONO X-Blast F37 vs Sony SRS-XE300
- DBSONO X-Blast F37 vs Ultimate Ears Boom 4
- DBSONO X-Blast F37 vs Marshall Emberton III
- DBSONO X-Blast F37 vs Marshall Emberton II
- DBSONO X-Blast F37 vs Soundcore 2
- DBSONO X-Blast F37 vs Tribit Stormbox 2
- DBSONO X-Blast F37 vs Sony ULT Field 1
- DBSONO X-Blast F37 vs JBL Grip
- See all 36 comparisons


