Short answer: the Sony ULT Field 3 on placement and price. It ranks #60 of 142 medium speakers at $138, a stronger placement than the Emberton II’s #103 of 142 at $159.99. The Sony is IP67 dustproof and water resistant, though it sounds a bit hollow with boosted treble; the Emberton II counters with a 30 hour battery, but has an echo-like coloration and bass that is not as deep as competitors.
The case for the Marshall Emberton II: 30 hour battery life - among the best in its class. Set against that: Strange unnatural echo-like sound coloration, bass not as deep as competitors.
What the Sony ULT Field 3 gets right: IP67 rated, dustproof and water resistant. The catch: Sounds a bit hollow, a bit boosted in the treble.
Buy the Sony ULT Field 3. It is rated higher for sound quality than the Marshall Emberton II and costs less, so there is no real case for the other one.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Marshall Emberton II | Sony ULT Field 3 | |
|---|---|---|
| Price | $159.99 | $138.00 |
| Ranked | #103 of 142 in Medium Size Portable Bluetooth Speakers | #60 of 142 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Bass Extension (-10dB) | 62Hz | - |
| Battery Life | 30 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth Latency | 80ms | - |
| Maximum SPL | 88dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Marshall Stack) | Yes (Party Connect up to 100 speakers) |
| Weight | 1.5 lbs (700 g) | 2.6 lbs (1.2 kg) |
| IP Rating | IP67 | IP67 |
| Bluetooth Version | 5.1 | 5.2 |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| Dimensions | 6.3" x 2.7" x 3" (160 x 68 x 76 mm) | 10.1" x 4.4" x 3.1" (256 x 113 x 79 mm) |
| Drivers | 2x 2" full-range drivers + 2x passive radiators | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| TWS | No | Yes |
| EQ | Yes (3 presets via app) | Yes (App + ULT button) |
| Built-in Microphone | No | Yes |
| Stereo | Yes | Yes |
| Omnidirectional | Yes | No |
| Power Input | USB-C | USB-C |
| Power Bank | No | Yes (USB-C, 5V/1.5A) |
| Aux Input | No | No |
| Amplifier Power | 20W | 27W |
| Digital Aux Input | No | No |
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How Sony ULT Field 3 compares with other leading options:
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Prices on this page were last checked September 23, 2026 at 11:24 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 II: $159.99 Amazon eBay
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.
Full Marshall Emberton II review and specifications →
| Amplifier Power | 20W |
|---|---|
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 62Hz |
| Battery Life | 30 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 80ms |
| Bluetooth Version | 5.1 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 6.3" x 2.7" x 3" (160 x 68 x 76 mm) |
| Drivers | 2x 2" full-range drivers + 2x passive radiators |
| EQ | Yes (3 presets via app) |
| IP Rating | IP67 |
| Maximum SPL | 88dB (measured by Alan Ross Reviews) |
| Omnidirectional | Yes |
| Party Mode | Yes (Marshall Stack) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | No |
| Weight | 1.5 lbs (700 g) |
- Links
- Reviews, Comparisons and Sound Samples
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Sony ULT Field 3: $138.00 Amazon eBay
Pros: IP67 rated, dustproof and water resistant. 24 hour battery life. App with 10-band EQ. Party Connect with up to 100 speakers. USB-C in/out for charging your phone.
Cons: Sounds a bit hollow, a bit boosted in the treble. Custom EQ and the ULT bass-boost button can’t be used together - turning on ULT disables the EQ. Bass is very weak with ULT off. Lost to the JBL Charge 6 in a side-by-side comparison despite being the larger speaker.
Full Sony ULT Field 3 review and specifications →
| Amplifier Power | 27W |
|---|---|
| App | Yes |
| Aux Input | No |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 10.1" x 4.4" x 3.1" (256 x 113 x 79 mm) |
| Drivers | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| EQ | Yes (App + ULT button) |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C, 5V/1.5A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 2.6 lbs (1.2 kg) |
- Links
- Reviews, Comparisons and Sound Samples
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