Short answer: the Ultimate Ears Megaboom 3 on measured sound quality, the Xdobo X8 on price. The Ultimate Ears Megaboom 3 ranks #86 of 142 medium speakers at $191.99. The Xdobo X8 ranks #125 at $35, $156.99 cheaper.
What the Ultimate Ears Megaboom 3 offers: IP67 rated, floats, and survives drops from up to 1 meter. 20 hour battery life - about double most speakers this size. Watch for: Not stereo, barely any bass. 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 2018. Not technically a 360 speaker, only front and rear.
What the Xdobo X8 offers: A compact 860g speaker with a useful practical feature set: IPX5 splash resistance, USB-C charging, aux and microSD playback, speakerphone and TWS pairing. Reviews consistently find it surprisingly loud and full-bodied for the size, making it a plausible inexpensive outdoor/background-music option. Watch for: The single full-range driver is the limitation. Reviews note a harsh midrange, rolled-off treble and audible distortion, while bass extension is only about 65Hz. It can play loud, but it does not have the clarity or control for attentive listening.
Buy the Ultimate Ears Megaboom 3 if sound quality is the priority over the price, or the Xdobo X8 if the price is the priority over sound quality.
Skip the Xdobo X8 if sound quality matters to you. It ranks near the bottom of the 142 medium speakers.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Ultimate Ears Megaboom 3 | Xdobo X8 | |
|---|---|---|
| Price | $191.99 | $35 |
| Ranked | #86 of 142 in Medium Size Portable Bluetooth Speakers | #125 of 142 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 70Hz | ~65Hz |
| Battery Life | 20 hours (Manufacturer specified) | 15 hours (Manufacturer specified) |
| Maximum SPL | 98dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (PartyUp up to 50 speakers) | - |
| Power Input | Micro USB | USB-C |
| Stereo | No | - |
| Omnidirectional | Yes | No |
| Weight | 2 lbs (925 g) | 1.9 lbs (860 g) |
| Bluetooth Version | 4.2 | 5.0 |
| Drivers | 2x 50mm fullrange | 66mm full-range driver |
| Dimensions | 3.4" x 8.9" x 3.4" (87 x 225 x 87 mm) | 8.7" x 3.7" x 2.8" (220 x 95 x 72 mm) |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | - |
| IP Rating | IPX7 | IPX5 |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Aux Input | - | Yes |
| MicroSD Playback | - | Yes |
| TWS | - | Yes |
| Built-in Microphone | - | Yes |
| Amplifier Power | - | 60W |
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Prices on this page were last checked September 16, 2026 at 12:41 AM 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 Megaboom 3: $191.99 Amazon eBay
Pros: IP67 rated, floats, and survives drops from up to 1 meter. 20 hour battery life - about double most speakers this size. Measured bass extension of 70Hz (-10dB).
Cons: Not stereo, barely any bass. 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 2018. Not technically a 360 speaker, only front and rear.
Full Ultimate Ears Megaboom 3 review and specifications →
| Bass Extension (-10dB) | 70Hz |
|---|---|
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Digital Aux Input | No |
| Dimensions | 3.4" x 8.9" x 3.4" (87 x 225 x 87 mm) |
| Drivers | 2x 50mm fullrange |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Maximum SPL | 98dB (measured by Alan Ross Reviews) |
| Omnidirectional | Yes |
| Party Mode | Yes (PartyUp up to 50 speakers) |
| Power Input | Micro USB |
| Stereo | No |
| Weight | 2 lbs (925 g) |
- Links
- Reviews, Comparisons and Sound Samples
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Xdobo X8: $35 eBay
Pros: A compact 860g speaker with a useful practical feature set: IPX5 splash resistance, USB-C charging, aux and microSD playback, speakerphone and TWS pairing. Reviews consistently find it surprisingly loud and full-bodied for the size, making it a plausible inexpensive outdoor/background-music option. Measured bass extension of ~65Hz (-10dB).
Cons: The single full-range driver is the limitation. Reviews note a harsh midrange, rolled-off treble and audible distortion, while bass extension is only about 65Hz. It can play loud, but it does not have the clarity or control for attentive listening.
Full Xdobo X8 review and specifications →
| Amplifier Power | 60W |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | ~65Hz |
| Battery Life | 15 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 8.7" x 3.7" x 2.8" (220 x 95 x 72 mm) |
| Drivers | 66mm full-range driver |
| IP Rating | IPX5 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | USB-C |
| TWS | Yes |
| Weight | 1.9 lbs (860 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons