Short answer: the Ultimate Ears Wonderboom 4. It ranks #84 of 136 medium speakers by sound quality at $59.99; the Soundcore Flare 2 ranks #105 and costs $80, which makes this an easy call rather than a real tradeoff.
What the Ultimate Ears Wonderboom 4 offers: Small size. Watch for: 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.
What the Soundcore Flare 2 offers: Try Alan Ross’s EQ for it Watch for: Rolled off treble. Thuddy bass. Not technically a 360 speaker, only front and rear.
Buy the Ultimate Ears Wonderboom 4. It ranks higher for sound quality than the Soundcore Flare 2 and costs less, so the other one has nothing left to offer.
The Soundcore Flare 2 is not a sound-quality pick. It sits near the bottom of the 136 medium speakers; there are better options higher up.
Specifications Side By Side
| Ultimate Ears Wonderboom 4 | Soundcore Flare 2 | |
|---|---|---|
| Price | $59.99 | $80 |
| Ranked | #84 of 136 in Medium Size Portable Bluetooth Speakers | #105 of 136 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | - | 56Hz |
| Battery Life | 14 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth Latency | - | 80ms |
| Max Volume | 87dB | 99dB |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | Yes | Pointing up |
| Weight | 0.9 lbs / 420 g | 1.3 lbs / 600 g |
| IP Rating | IP67 | IPX7 |
| Bluetooth Version | 5.2 | 5.0 |
| Dimensions | 4.1" x 3.8" (104 x 95.3 mm) | - |
| Drivers | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) | 2x full-range drivers + 2x passive radiators |
| TWS | Yes | Yes |
| Party Mode | No | Yes (PartyCast up to 100 speakers) |
| App | No | Yes |
| EQ | No | Yes |
| Built in Microphone | No | Yes |
| Power Bank | No | - |
| Aux Input | No | - |
| Digital Aux Input | No | No |
| Bluetooth Codecs | - | SBC |
| Output Power | - | 20W |
Related Speaker Comparisons
Other pairings from the same speaker class worth checking:
- Soundcore Boost “upgraded” 2021 vs Ultimate Ears Wonderboom 3
- Soundcore Boost “original model” pre-2021 vs Ultimate Ears Wonderboom 3
- Tribit Xsound Plus 2 vs Ultimate Ears Wonderboom 3
- Soundcore Glow vs Ultimate Ears Wonderboom 4
- JBL Charge 3 vs Ultimate Ears Wonderboom 4
Prices on this page were last checked August 27, 2026 at 10:09 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
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 |
| Bass Extension (-10dB) | |
| Battery Life | 14 hours (Manufacturer specified) |
| Bluetooth Latency | |
| 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 |
| Max Volume | 87dB |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| 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 77 comparisons
Soundcore Flare 2: $80 Amazon eBay
Pros: Try Alan Ross’s EQ for it
Cons: Rolled off treble. Thuddy bass. Not technically a 360 speaker, only front and rear.
Full Soundcore Flare 2 review and specifications →
| App | Yes |
|---|---|
| Bass Extension (-10dB) | 56Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 80ms |
| Bluetooth Version | 5.0 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Drivers | 2x full-range drivers + 2x passive radiators |
| EQ | Yes |
| IP Rating | IPX7 |
| Max Volume | 99dB |
| Omnidirectional | Pointing up |
| Output Power | 20W |
| Party Mode | Yes (PartyCast up to 100 speakers) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.3 lbs / 600 g |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Soundcore Flare 2 vs Sony SRS-XB30
- Soundcore Flare 2 vs W-King D8 Mini
- Soundcore Flare 2 vs Teufel Rockster Go
- Soundcore Flare 2 vs B&O Beosound Explore
- Soundcore Flare 2 vs Marshall Emberton II
- Soundcore Flare 2 vs Tribit Stormbox Mini+
- Soundcore Flare 2 vs Sony SRS-XE200
- Soundcore Flare 2 vs Marshall Emberton III
- See all 73 comparisons