Short answer: the Ultimate Ears Boom 3 for better sound quality, the W-King D8 Mini for the lower price. The Ultimate Ears Boom 3 ranks #89 of 136 medium speakers at $129.90. The W-King D8 Mini ranks #106 at $38.93, $90.97 cheaper.
What the Ultimate Ears Boom 3 offers: 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 Watch for: 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.
What the W-King D8 Mini offers: 30W output with switchable indoor/outdoor EQ modes. IPX6 rated with a 5000mAh battery. Watch for: Recessed midrange, harsh treble. Bass doesn’t go as deep as others.
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.
Skip the W-King D8 Mini if sound quality matters to you. It ranks near the bottom of the 136 medium speakers.
If battery life is a priority, the W-King D8 Mini is rated for 24 hours versus 15 hours for the Ultimate Ears Boom 3.
Specifications Side By Side
| Ultimate Ears Boom 3 | W-King D8 Mini | |
|---|---|---|
| Price | $129.90 | $38.93 |
| Ranked | #89 of 136 in Medium Size Portable Bluetooth Speakers | #106 of 136 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 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) | - |
| Built in Microphone | No | Yes |
| Max Volume | 87dB | 100dB |
| Digital Aux Input | No | No |
| Aux Input | - | Yes |
| MicroSD Playback | - | Yes |
| Output Power | - | 30W |
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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.
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The Two Speakers In Full
Ultimate Ears Boom 3: $129.90 Amazon eBay
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
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 →
| Bass Extension (-10dB) | 91Hz |
|---|---|
| Battery Life | 15 hours (Manufacturer specified) |
| 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 |
| Max Volume | 87dB |
| Omnidirectional | Yes |
| Party Mode | Yes (PartyUp up to 50 speakers) |
| Power Input | Micro USB |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.3 lbs / 608 g |
- Links
- Reviews, Comparisons and Sound Samples
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W-King D8 Mini: $38.93 Aliexpress eBay
Pros: 30W output with switchable indoor/outdoor EQ modes. IPX6 rated with a 5000mAh battery.
Cons: Recessed midrange, harsh treble. Bass doesn’t go as deep as others.
Full W-King D8 Mini review and specifications →
| Aux Input | Yes |
|---|---|
| Bass Extension (-10dB) | 63Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| 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 |
| IP Rating | IPX6 |
| Max Volume | 100dB |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Output Power | 30W |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | No |
| Weight | 2.8 lbs / 1260 g |
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