Short answer: the Sony ULT Field 3 for the higher ranking, the Sony XB33 for the lower price. The Sony ULT Field 3 ranks #57 of 134 medium speakers at $148. The Sony XB33 ranks #59 at $110, $38 cheaper.
On the Sony ULT Field 3 side: IP67 rated, dustproof and water resistant. The tradeoff: Sounds a bit hollow, a bit boosted in the treble.
The case for the Sony XB33: IP67 rated and lightweight (2.4 lb). The catch: Not very loud.
Buy the Sony ULT Field 3 if the ranking matters more than the price. Buy the Sony XB33 if the price matters more than the ranking.
Specifications Side By Side
| Sony ULT Field 3 | Sony XB33 | |
|---|---|---|
| Price | $148 | $110 |
| Ranked | #57 of 134 in Medium Size Portable Bluetooth Speakers | #59 of 134 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes (Sony Music Connect App) |
| Aux Input | No | No |
| Battery Life | 24 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC, LDAC |
| Bluetooth Version | 5.2 | 5.0 |
| Built in Microphone | Yes | - |
| Dimensions | 10.1" x 4.5" x 3.1" (256 x 113 x 79 mm) | 9.69" x 3.82" x 4.17" (246 x 97 x 106 mm) |
| Drivers | 1x 20mm tweeter + 1x 86mm x 46mm woofer | 2x 48x70mm X-Balanced racetrack drivers + 2x passive radiators |
| EQ | Yes (App + ULT button) | Yes (3 band) |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (Party Connect up to 100 speakers) | Yes (Partyconnect up to 100 speakers) |
| Power Bank | Yes | Yes |
| Power Input | USB-C | - |
| Stereo | Yes | Yes |
| TWS | Yes | - |
| Weight | 2.6 lbs / 1.2 kg | 2.4 lbs / 1.1 kg |
| Output Power | 27W | 16W RMS |
| Bass Extension (-10dB) | - | 50Hz |
| Bluetooth Latency | - | 110ms |
| Max Volume | - | 97dB |
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
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- Sony ULT Field 3 vs JBL Flip 6
- Sony ULT Field 3 vs Sonos Roam
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- Links
Sony XB33: $110
Pros: IP67 rated and lightweight (2.4 lb). App-controlled color LED lighting, Party Connect links up to 100 speakers. ~19 hour real-world battery without lights.
Cons: Not very loud. Upper bass peaks, midrange dip, upper midrange peaks, not very neutral. Speaker will not remain at max volume and will turn itself down automatically.
| App | Yes (Sony Music Connect App) |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 50Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Latency | 110ms |
| Bluetooth Version | 5.0 |
| Dimensions | 9.69" x 3.82" x 4.17" (246 x 97 x 106 mm) |
| Drivers | 2x 48x70mm X-Balanced racetrack drivers + 2x passive radiators |
| EQ | Yes (3 band) |
| IP Rating | IP67 |
| Max Volume | 97dB |
| Output Power | 16W RMS |
| Party Mode | Yes (Partyconnect up to 100 speakers) |
| Power Bank | Yes |
| Stereo | Yes |
| Weight | 2.4 lbs / 1.1 kg |
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Sony xb33 vs xb43 vs Soundcore Motion Plus speakers test
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- Alan Ross Reviews: Sony XB33 vs XB32 vs JBL Charge 4 best £120 bluetooth speaker?
- Alan Ross Reviews: LG Xboom Go PL7 vs JBL Charge 4 and Sony XB33 - best Bluetooth speaker?
- Head-to-Head Comparisons
- 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.