Short answer: the Soundcore Boom 3i. It ranks #27 of 134 medium speakers at $110; the Sony ULT Field 3 ranks #57 and costs $148, so there is not much of a tradeoff to weigh.
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.
The case for the Soundcore Boom 3i: Looks to be designed as a direct competitor to the Charge 5 with a very similar sound profile, warm tuned with boosted bass. The catch: Not quite as good as a Charge 5, doesn’t go quite as loud or sound quite as balanced, but very very close.
Buy the Sony ULT Field 3 if the price matters more than the ranking. Buy the Soundcore Boom 3i if the ranking matters more than the price.
Specifications Side By Side
| Sony ULT Field 3 | Soundcore Boom 3i | |
|---|---|---|
| Price | $148 | $110 |
| Ranked | #57 of 134 in Medium Size Portable Bluetooth Speakers | #27 of 134 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Battery Life | 24 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC |
| Bluetooth Version | 5.2 | 5.3 |
| Built in Microphone | Yes | Yes |
| Dimensions | 10.1" x 4.5" x 3.1" (256 x 113 x 79 mm) | 8.3" x 3.3" x 3.1" (210 x 85 x 78.5 mm) |
| Drivers | 1x 20mm tweeter + 1x 86mm x 46mm woofer | 94mm woofer + tweeter |
| EQ | Yes (App + ULT button) | Yes |
| IP Rating | IP67 | IP68 |
| Party Mode | Yes (Party Connect up to 100 speakers) | No |
| Power Bank | Yes | - |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No |
| TWS | Yes | Yes |
| Weight | 2.6 lbs / 1.2 kg | 1.7 lbs / 783 g |
| Output Power | 27W | 50W |
| Bass Extension (-10dB) | - | 56Hz |
The Two Speakers In Full
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
- Sony ULT Field 3 vs JBL Charge 6
- Sony ULT Field 3 vs Sony ULT Field 1
- Sony ULT Field 3 vs KEF Muo gen2
- Sony ULT Field 3 vs Marshall Emberton II
- Sony ULT Field 3 vs Minirig 2
- Sony ULT Field 3 vs Minirig 3
- Sony ULT Field 3 vs Sony SRS-XE300
- Sony ULT Field 3 vs Tribit Stormbox Mini+
- Sony ULT Field 3 vs Turtlebox Ranger
- Sony ULT Field 3 vs Yamaha True X Speaker 1A
- Sony ULT Field 3 vs JBL Charge Essential 2
- Sony ULT Field 3 vs JBL Flip 7
- Sony ULT Field 3 vs JBL Flip Essential
- Sony ULT Field 3 vs Marshall Emberton III
- Sony ULT Field 3 vs Ultimate Ears Megaboom 3
- Sony ULT Field 3 vs Xiaomi Sound Party
- Sony ULT Field 3 vs Bose Soundlink Flex 2nd gen
- Sony ULT Field 3 vs Harman Kardon Luna
- Sony ULT Field 3 vs Huawei Sound Joy
- Sony ULT Field 3 vs JBL Charge 5
- Sony ULT Field 3 vs JBL Flip 6
- Sony ULT Field 3 vs Sonos Roam
- Sony ULT Field 3 vs Sonos Roam 2
- Sony ULT Field 3 vs Sony SRS-XB20
- Sony ULT Field 3 vs Sony XB33
- Sony ULT Field 3 vs Ultimate Ears Boom 3
- Links
Soundcore Boom 3i: $110 Amazon Bhphotovideo
Pros: Looks to be designed as a direct competitor to the Charge 5 with a very similar sound profile, warm tuned with boosted bass. Better value for the money than the Charge 5.
Cons: Not quite as good as a Charge 5, doesn’t go quite as loud or sound quite as balanced, but very very close. An earlier firmware version had some bass distortion, update your firmware in the Soundcore App
| App | Yes |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 56Hz |
| Battery Life | 16 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Version | 5.3 |
| Built in Microphone | Yes |
| Dimensions | 8.3" x 3.3" x 3.1" (210 x 85 x 78.5 mm) |
| Drivers | 94mm woofer + tweeter |
| EQ | Yes |
| IP Rating | IP68 |
| Output Power | 50W |
| Party Mode | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 1.7 lbs / 783 g |
- Reviews, Comparisons and Sound Samples
- 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.