Short answer: the B&O Beosound Explore on measured sound quality, the Ultimate Ears Megaboom 4 on price. The B&O Beosound Explore ranks #112 of 142 medium speakers at $299. The Ultimate Ears Megaboom 4 ranks #137 at $200, $99 cheaper.
What the Ultimate Ears Megaboom 4 offers: IP67 rated, floats, and finally uses USB-C charging. 20 hour battery life. ‘PartyUp’ feature syncs multiple UE speakers together. Watch for: A lot of distortion at higher volumes. Rolled off treble. Not very loud. They really screwed this up
What the B&O Beosound Explore offers: IP67 rated with a rugged ‘seatbelt’ strap and carabiner hook. Real-world battery life around 20-24 hours. Distinctive anodized-aluminum design. Watch for: Huge lack of bass extension compared to competitors, overly hot ringing treble. Colored midrange. Just not great sounding overall.
Buy the Ultimate Ears Megaboom 4 when the price outweighs sound quality for you, and the B&O Beosound Explore when sound quality outweighs the price instead.
If sound quality matters at all to you, skip both of these and look higher up the 142 medium speakers instead.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Ultimate Ears Megaboom 4 | B&O Beosound Explore | |
|---|---|---|
| Price | $200 | $299.00 |
| Ranked | #137 of 142 in Medium Size Portable Bluetooth Speakers | #112 of 142 in Medium Size Portable Bluetooth Speakers |
| App | Yes | - |
| Battery Life | 20 hours (Manufacturer specified) | 27 hours (Manufacturer specified) |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (PartyUp up to 50 speakers) | - |
| Stereo | No | Yes |
| Omnidirectional | Yes | No |
| Bluetooth Version | 5.1 | 5.2 |
| Dimensions | 3.4" x 3.4" x 8.9" (87 x 87 x 225 mm) | 3.2" x 4.9" x 3.2" (81 x 124 x 81 mm) |
| Drivers | 2x 50x50mm full-range + 2x 55x86mm passive radiators | 2x 1.8" (46mm) full-range drivers |
| TWS | Yes | Yes |
| EQ | Yes (via app) | - |
| Power Input | USB-C | USB-C |
| Built-in Microphone | No | No |
| Weight | 2.4 lbs (1.1 kg) | 1.4 lbs (631 g) |
| Maximum SPL | 91dB (Manufacturer specified) | 91dB (Manufacturer specified) |
| Digital Aux Input | No | Yes (USB-C) |
| Bluetooth Codecs | SBC | SBC |
| Bass Extension (-10dB) | - | ~70Hz |
| Power Bank | - | No |
| Amplifier Power | - | 60W |
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How B&O Beosound Explore compares with other leading options:
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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 4: $200 Amazon eBay
Pros: IP67 rated, floats, and finally uses USB-C charging. 20 hour battery life. ‘PartyUp’ feature syncs multiple UE speakers together.
Cons: A lot of distortion at higher volumes. Rolled off treble. Not very loud. They really screwed this up
Full Ultimate Ears Megaboom 4 review and specifications →
| App | Yes |
|---|---|
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.1 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 3.4" x 3.4" x 8.9" (87 x 87 x 225 mm) |
| Drivers | 2x 50x50mm full-range + 2x 55x86mm passive radiators |
| EQ | Yes (via app) |
| IP Rating | IP67 |
| Maximum SPL | 91dB (Manufacturer specified) |
| Omnidirectional | Yes |
| Party Mode | Yes (PartyUp up to 50 speakers) |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 2.4 lbs (1.1 kg) |
- Links
- Reviews, Comparisons and Sound Samples
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B&O Beosound Explore: $299.00 Amazon eBay
Pros: IP67 rated with a rugged ‘seatbelt’ strap and carabiner hook. Real-world battery life around 20-24 hours. Distinctive anodized-aluminum design. Measured bass extension of ~70Hz (-10dB).
Cons: Huge lack of bass extension compared to competitors, overly hot ringing treble. Colored midrange. Just not great sounding overall.
Full B&O Beosound Explore review and specifications →
| Amplifier Power | 60W |
|---|---|
| Bass Extension (-10dB) | ~70Hz |
| Battery Life | 27 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | No |
| Digital Aux Input | Yes (USB-C) |
| Dimensions | 3.2" x 4.9" x 3.2" (81 x 124 x 81 mm) |
| Drivers | 2x 1.8" (46mm) full-range drivers |
| IP Rating | IP67 |
| Maximum SPL | 91dB (Manufacturer specified) |
| Omnidirectional | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.4 lbs (631 g) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
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