Short answer: the Marshall Emberton III for battery, the Wonderboom 3 for toughness, though neither ranks well in its class. The Emberton III lasts 30 hours with a 20 minute quick-charge adding 4 hours, but it has an unnatural echo-like coloration and bass not as deep as competitors. The Wonderboom 3 is IP67 rated, floats and is rated to survive a 5 ft drop, yet it is not stereo and has barely any bass. Both are rated below 3.0/5 among the 164 medium speakers; for better sound, the Earfun Uboom L ranks #2 at $49.79.
Buy the Ultimate Ears Wonderboom 3. It is rated higher for sound quality than the Marshall Emberton III and costs less, so only choose the other one for a particular feature it does better.
There is a real battery-life gap here: the Marshall Emberton III is rated for 32 hours, the Ultimate Ears Wonderboom 3 only 14 hours.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Marshall Emberton III | Ultimate Ears Wonderboom 3 | |
|---|---|---|
| Price | $129.99 | $85.99 |
| Ranked | #122 of 164 in Medium Size Portable Bluetooth Speakers | #107 of 164 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Bass Extension (-10dB) | 62Hz | 76Hz |
| Battery Life | 32 hours (Manufacturer specified) | 14 hours (Manufacturer specified) |
| Party Mode | Yes (Marshall Stack) | No |
| Weight | 1.5 lbs (673 g) | 0.9 lbs (420 g) |
| IP Rating | IP67 | IP67 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.2 |
| Dimensions | 6.3” x 2.7” x 3” (160 x 68 x 76 mm) | 4.1” x 3.8” (104 x 95.3 mm) |
| Drivers | 2x 2” full-range cone drivers + 2x 2” passive radiators | 2x 40mm active drivers + 2x passive radiators (46.1 x 65.2mm) |
| TWS | No | Yes |
| EQ | Yes (3 presets via app) | No |
| Built-in Microphone | Yes | No |
| Stereo | Yes | No |
| Omnidirectional | Yes | Yes |
| Power Input | USB-C | Micro USB |
| Power Bank | No | No |
| Aux Input | No | No |
| Amplifier Power | 20W | - |
| Bluetooth Codecs | SBC | SBC |
| Digital Aux Input | No | No |
| Strap | No | - |
| Bluetooth Latency | - | 166ms |
| Maximum SPL | - | 87dB (measured by Alan Ross Reviews) |
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Prices on this page were last checked October 4, 2026 at 9:58 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
Marshall Emberton III: $129.99 Amazon eBay
Older model: the Marshall Emberton II (ranked lower, rated 2.7/5).
Smaller model: the Marshall Willen II (rated 4/5).
Larger model: the Marshall Middleton (rated 4/5).
Pros: 30 hour battery life: among the best in its class; a 20 min quick-charge gives 4 hours. IP67 rated, durable rubbery build using 50% recycled plastic. Measured bass extension of 62Hz (-10dB).
Cons: Strange unnatural echo-like sound coloration, bass not as deep as competitors. Not technically a 360 speaker, only front and rear. Not very loud. Not really any different from the Emberton II except having the treble turned down a little bit.
Full Marshall Emberton III review and specifications →
| Amplifier Power | 20W |
|---|---|
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 62Hz |
| Battery Life | 32 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 6.3” x 2.7” x 3” (160 x 68 x 76 mm) |
| Drivers | 2x 2” full-range cone drivers + 2x 2” passive radiators |
| EQ | Yes (3 presets via app) |
| IP Rating | IP67 |
| Omnidirectional | Yes |
| Party Mode | Yes (Marshall Stack) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | No |
| TWS | No |
| Weight | 1.5 lbs (673 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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Ultimate Ears Wonderboom 3: $85.99 Amazon eBay
Newer model: the Ultimate Ears Wonderboom 4, ranked higher, rated 2.9/5.
Pros: IP67 rated, floats, and is rated to survive a 5 ft drop onto hard surfaces. 14 hour battery: longer than the Wonderboom 2. Measured bass extension of 76Hz (-10dB).
Cons: Not stereo, barely any bass. Boosted 93Hz upper bass. Cuts bass heavily at high volume. 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 2022. Not technically a 360 speaker, only front and rear.
Full Ultimate Ears Wonderboom 3 review and specifications →
| App | No |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 76Hz |
| Battery Life | 14 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 166ms |
| 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 |
| Maximum SPL | 87dB (measured by Alan Ross Reviews) |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Bank | No |
| Power Input | Micro USB |
| Stereo | No |
| TWS | Yes |
| Weight | 0.9 lbs (420 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: The biggest upgrade since time began! 💪 More from alanrossreviews →
- Jay’s Straight Up Reviews & More: JBL Flip 6 vs Ultimate Ears Wonderboom 3 (Indoor Mode)⚔️ Battle of the Handheld Bluetooth Speakers. More from JaysStraightUpReviews →
- Alan Ross Reviews: Tribit Stormbox Flow has deeper bass than the Bose Flex but………..
- Danny Pops: Best Outdoor Bluetooth Speaker? Wonderboom 3 VS Sony XB-13 More from DannyPops →
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