Short answer: the Sony XB33 if sound quality matters most, the Sony ULT Field 1 if price matters most. The Sony XB33 ranks #59 of 136 medium speakers at $110. The Sony ULT Field 1 ranks #76 at $98, $12 cheaper.
What the Sony XB33 offers: 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. Watch for: 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.
What the Sony ULT Field 1 offers: IP67 rated, survives drops and 1m submersion. Real-world battery around 28+ hours with ULT (bass boost) mode off. Stereo-pairs with a second ULT Field 1. Watch for: Upper midrange peak, rolled off treble
Buy the Sony XB33 if sound quality matters more than the price. Buy the Sony ULT Field 1 if the price matters more than sound quality.
If battery life is a priority, the Sony XB33 is rated for 24 hours versus 12 hours for the Sony ULT Field 1.
Specifications Side By Side
| Sony XB33 | Sony ULT Field 1 | |
|---|---|---|
| Price | $110 | $98.00 |
| Ranked | #59 of 136 in Medium Size Portable Bluetooth Speakers | #76 of 136 in Medium Size Portable Bluetooth Speakers |
| App | Yes (Sony Music Connect App) | Yes |
| Aux Input | No | No |
| Bass Extension (-10dB) | 50Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LDAC | AAC, SBC |
| Bluetooth Latency | 110ms | - |
| EQ | Yes (3 band) | Yes |
| IP Rating | IP67 | IP67 |
| Max Volume | 97dB | - |
| Party Mode | Yes (Party Connect up to 100 speakers) | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A) | No |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| Weight | 2.4 lbs / 1.1 kg | 1.4 lbs / 650 g |
| Bluetooth Version | 5.0 | 5.3 |
| Dimensions | 9.7" x 3.8" x 4.2" (246 x 97 x 106 mm) | 8.1" x 3" x 3" (206 x 77 x 76 mm) |
| Output Power | 16W RMS | - |
| Drivers | 2x 48x70mm X-Balanced racetrack drivers + 2x passive radiators | 83mm x 42mm woofer, 16mm tweeter + passive radiator |
| Digital Aux Input | No | No |
| Built in Microphone | - | Yes |
| Power Input | - | USB-C |
| TWS | - | Yes |
Related Speaker Comparisons
A few more comparisons worth a look in the same class:
- JBL Grip vs Bose SoundLink Color II
- Soundcore Boom 3i vs JBL Grip
- JBL Grip vs Ultimate Ears Boom 4
- Soundcore Boom 3i vs Sony ULT Field 1
- Sony XB33 vs JBL Grip
Prices on this page were last checked August 27, 2026 at 10:09 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
Sony XB33: $110 eBay
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.
Full Sony XB33 review and specifications →
| 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 |
| Digital Aux Input | No |
| Dimensions | 9.7" x 3.8" x 4.2" (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 |
| Omnidirectional | No |
| Output Power | 16W RMS |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-A) |
| Stereo | Yes |
| Weight | 2.4 lbs / 1.1 kg |
- Links
- Reviews, Comparisons and Sound Samples
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- Reddit Search for Sony XB33 Review
- Head-to-Head Comparisons
Sony ULT Field 1: $98.00 Amazon eBay
Pros: IP67 rated, survives drops and 1m submersion. Real-world battery around 28+ hours with ULT (bass boost) mode off. Stereo-pairs with a second ULT Field 1.
Cons: Upper midrange peak, rolled off treble
Full Sony ULT Field 1 review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | AAC, SBC |
| Bluetooth Version | 5.3 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 8.1" x 3" x 3" (206 x 77 x 76 mm) |
| Drivers | 83mm x 42mm woofer, 16mm tweeter + passive radiator |
| EQ | Yes |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | Yes (Party Connect up to 100 speakers) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 1.4 lbs / 650 g |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons