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.
As an eBay Partner, we may be compensated if you make a purchase.
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