Short answer: the Ultimate Ears Boom 3 for better sound quality, the W-King D8 Mini for the lower price, though neither ranks well in its class. The Ultimate Ears Boom 3 ranks #114 of 175 medium speakers, rated 2.9/5, at $134.99. The W-King D8 Mini ranks #135, rated 2.6/5, at $49.99, $85 cheaper. Both are rated below 3.0/5 among the 175 medium speakers; for better sound, the EarFun Uboom L ranks #2 at $49.79.
The Ultimate Ears Boom 3 is the lighter pick. Rich and warm bass without muddying mix, crisp highs, excellent 15-hour battery life, stable Bluetooth connectivity, IP67 rated and floats, rugged fabric shell, can pair up to 150 speakers via PartyUp. At 1.3 lbs (608 g) it weighs much less than the W-King D8 Mini at 2.8 lbs (1.26 kg). The tradeoff: Not stereo, barely any bass, recessed treble.
The W-King D8 Mini is the deeper-bass, longer-running pick. 30W output with switchable indoor/outdoor EQ modes. Its bass reaches about 63Hz before falling 10dB, against 91Hz for the Ultimate Ears Boom 3. It is rated for 24 hours of battery against 15 for the Ultimate Ears Boom 3. It keeps a wired aux input, which the Ultimate Ears Boom 3 lacks. The tradeoff: Recessed midrange, harsh treble.
Buy the Ultimate Ears Boom 3 when sound quality outweighs the price for you, and the W-King D8 Mini when the price outweighs sound quality instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Ultimate Ears Boom 3 | W-King D8 Mini | |
|---|---|---|
| Price | $134.99 | $49.99 |
| Ranked | #114 of 175 in Medium Size Portable Bluetooth Speakers | #135 of 175 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 91Hz | 63Hz |
| Battery Life | 15 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Party Mode | Yes (PartyUp up to 50 speakers) | - |
| Power Input | Micro USB | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | Yes | No |
| Weight | 1.3 lbs (608 g) | 2.8 lbs (1260 g) |
| IP Rating | IP67 | IPX6 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.2 | 5.0 |
| Dimensions | 7.2” x 2.9” (184 x 73 mm) | 9.9” x 3.7” x 3.7” (251 x 94 x 94 mm) |
| Drivers | 2x 2” active drivers + 2x 2” x 4” passive radiators | 2x 70mm woofers, 2x 30mm tweeters |
| TWS | Yes | No |
| EQ | Yes (via app) | Yes (2 modes - Indoor/Outdoor) |
| Built-in Microphone | No | Yes |
| Maximum SPL | 87dB (Manufacturer specified) | 100dB (measured by Alan Ross Reviews) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| App | Yes (Ultimate Ears BOOM & MEGABOOM app) | No |
| Aux Input | No | Yes |
| Strap | Yes (built-in loop) | - |
| MicroSD Playback | - | Yes |
| Amplifier Power | - | 30W |
Related Speaker Comparisons
More worthwhile head-to-heads for Ultimate Ears Boom 3:
- EarFun Uboom L vs Ultimate Ears Boom 3
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- Soundcore Boost “upgraded” 2021 vs Ultimate Ears Boom 3
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Prices on this page were last checked October 12, 2026 at 4:13 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 Boom 3: $134.99 Amazon $134.99 eBay
Newer model: the Ultimate Ears Boom 4, ranked higher, rated 2.9/5, released Jun 2024. See every Ultimate Ears Wonderboom, Boom and Megaboom generation.
Pros: Rich and warm bass without muddying mix, crisp highs, excellent 15-hour battery life, stable Bluetooth connectivity, IP67 rated and floats, rugged fabric shell, can pair up to 150 speakers via PartyUp. Measured bass extension of 91Hz (-10dB).
Cons: Not stereo, barely any bass, recessed treble. You can tell from the micro USB that they are just feeding you the same crap hardware over and over, this is inexcusable for a product released in 2021. Lots of mentions of failing batteries on amazon. Not technically a 360 speaker, only front and rear.
Full Ultimate Ears Boom 3 review and specifications →
| Released | Sep 2018 (8 years ago) |
|---|---|
| App | Yes (Ultimate Ears BOOM & MEGABOOM app) |
| Aux Input | No |
| Bass Extension (-10dB) | 91Hz |
| Battery Life | 15 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 7.2” x 2.9” (184 x 73 mm) |
| Drivers | 2x 2” active drivers + 2x 2” x 4” passive radiators |
| EQ | Yes (via app) |
| IP Rating | IP67 |
| Maximum SPL | 87dB (Manufacturer specified) |
| Omnidirectional | Yes |
| Party Mode | Yes (PartyUp up to 50 speakers) |
| Power Input | Micro USB |
| Stereo | Yes |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 1.3 lbs (608 g) |
- Links
- Reviews, Comparisons and Sound Samples
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W-King D8 Mini: $49.99 W-King $49.99 eBay
Pros: 30W output with switchable indoor/outdoor EQ modes. IPX6 rated with a 5000mAh battery. Measured bass extension of 63Hz (-10dB).
Cons: Recessed midrange, harsh treble. Bass doesn’t go as deep as others.
Full W-King D8 Mini review and specifications →
| Released | Feb 2020 (6 years ago) |
|---|---|
| Amplifier Power | 30W |
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 63Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9.9” x 3.7” x 3.7” (251 x 94 x 94 mm) |
| Drivers | 2x 70mm woofers, 2x 30mm tweeters |
| EQ | Yes (2 modes - Indoor/Outdoor) |
| IP Rating | IPX6 |
| Maximum SPL | 100dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | No |
| Weight | 2.8 lbs (1260 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- W-King D8 Mini vs Soundcore Flare 2
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