Short answer: the Sony ULT Field 3 for the higher ranking, the Marshall Emberton III for the lower price. The Sony ULT Field 3 ranks #57 of 134 medium speakers at $148. The Marshall Emberton III ranks #97 at $129.99, $18.01 cheaper.
What the Marshall Emberton III gets right: 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.
On the Sony ULT Field 3 side: IP67 rated, dustproof and water resistant. The catch: Sounds a bit hollow, a bit boosted in the treble.
Buy the Marshall Emberton III if the price matters more than the ranking. Buy the Sony ULT Field 3 if the ranking matters more than the price.
Specifications Side By Side
| Marshall Emberton III | Sony ULT Field 3 | |
|---|---|---|
| Price | $129.99 | $148 |
| Ranked | #97 of 134 in Medium Size Portable Bluetooth Speakers | #57 of 134 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Bass Extension (-10dB) | 62Hz | - |
| Battery Life | 32 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Party Mode | Yes (Marshall Stack) | Yes (Party Connect up to 100 speakers) |
| Weight | 1.5 lbs / 673 g | 2.6 lbs / 1.2 kg |
| IP Rating | IP67 | IP67 |
| Bluetooth Version | 5.3 | 5.2 |
| Dimensions | 6.3" x 2.7" x 3.0" (160 x 68 x 76 mm) | 10.1" x 4.5" x 3.1" (256 x 113 x 79 mm) |
| Drivers | 2x 2" full-range cone drivers + 2x 2" 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 | Yes | Yes |
| Stereo | Yes | Yes |
| Power Input | USB-C | USB-C |
| Power Bank | No | Yes |
| Aux Input | No | No |
| Output Power | 20W | 27W |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
The Two Speakers In Full
Marshall Emberton III: $129.99 Amazon
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.
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.
| App | Yes |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 62Hz |
| Battery Life | 32 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built in Microphone | Yes |
| Dimensions | 6.3" x 2.7" x 3.0" (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 |
| Output Power | 20W |
| Party Mode | Yes (Marshall Stack) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | No |
| Weight | 1.5 lbs / 673 g |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Links
Sony ULT Field 3: $148 Amazon
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.
| App | Yes |
|---|---|
| Aux Input | No |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 |
| Built in Microphone | Yes |
| Dimensions | 10.1" x 4.5" 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 |
| Output Power | 27W |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 2.6 lbs / 1.2 kg |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.