These sit in different size classes, so this is not a straight ranking comparison. The Bose SoundLink Plus ranks #25 of 82 large speakers by sound quality at $269; the Sony ULT Field 3 ranks #61 of 144 medium speakers by sound quality at $138.
Why pick the Bose SoundLink Plus: IP67 rated, IP67 water/dustproof. Watch for: Boosted thuddy bass, but not as deep as the SoundLink Flex and you should probably just buy one of those instead if you want a Bose.
The case for the Sony ULT Field 3: IP67 rated, dustproof and water resistant. The catch: Sounds a bit hollow, a bit boosted in the treble.
Buy the Bose SoundLink Plus at $269 if you want a large speaker. Buy the Sony ULT Field 3 at $138 if you want a medium speaker instead.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Bose SoundLink Plus | Sony ULT Field 3 | |
|---|---|---|
| Price | $269.00 | $138.00 |
| Ranked | #25 of 82 in Large Size Portable Bluetooth Speakers | #61 of 144 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Battery Life | 20 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Built-in Microphone | No | Yes |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (Bose Party mode) | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C) | Yes (USB-C, 5V/1.5A) |
| Power Input | USB-C | USB-C |
| TWS | Yes | Yes |
| Weight | 3.3 lbs (1.5 kg) | 2.6 lbs (1.2 kg) |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| EQ | No | Yes (App + ULT button) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Bluetooth Version | 5.4 | 5.2 |
| Dimensions | 9.1” x 3.9” x 3.4” (231 x 99 x 86 mm) | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) |
| Drivers | 1x 2.5” (63.5mm) woofer + 1x ~0.78” (20mm) tweeter + 4x passive radiators | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| Digital Aux Input | No | No |
| Strap | Yes (built-in loop) | Yes (detachable shoulder strap) |
| Amplifier Power | - | 27W |
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Prices on this page were last checked September 26, 2026 at 11:14 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
Bose SoundLink Plus: $269.00 Amazon eBay
Pros: IP67 rated, IP67 water/dustproof. Close to 20 hour battery life. Vibrant sound with booming bass, clean mids. Bluetooth 5.4 with good range. Premium tactile grille, smooth silicone. Quality build at $269.
Cons: Boosted thuddy bass, but not as deep as the SoundLink Flex and you should probably just buy one of those instead if you want a Bose.
Full Bose SoundLink Plus review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.4 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 9.1” x 3.9” x 3.4” (231 x 99 x 86 mm) |
| Drivers | 1x 2.5” (63.5mm) woofer + 1x ~0.78” (20mm) tweeter + 4x passive radiators |
| EQ | No |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | Yes (Bose Party mode) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 3.3 lbs (1.5 kg) |
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Sony ULT Field 3: $138.00 Amazon eBay
Older models: the Sony XB33 (rated 3.4/5), the Sony SRS-XE300 (rated 2.8/5) and the Sony SRS-XB30 (rated 2.6/5).
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 |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| Weight | 2.6 lbs (1.2 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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