Short answer: the Sony ULT Field 3. Both are rated 3.4/5 for sound quality (#74 and #78 of 175 medium speakers), and the Sony ULT Field 3 costs $208 against $297.77 for the Bose Portable Smart Speaker, so with nothing between them on sound quality, price settles it.
What the Bose Portable Smart Speaker does well: Both Alexa and Google Assistant are built in, and RTINGS rates its microphones as excellent at hearing commands from far away or in a noisy room. The tradeoff: RTINGS found the out of the box tuning boomy and says it doesn’t get very loud; the app’s bass and treble sliders help, and SoundGuys recommended cutting bass by 10 to 20 steps to balance it.
The Sony ULT Field 3 is the longer-running, tougher pick. IP67 rated, dustproof and water resistant. It is rated for 24 hours of battery against 12 for the Bose Portable Smart Speaker. It is rated IP67 against IPX4 for the Bose Portable Smart Speaker. It supports LDAC Bluetooth, which the Bose Portable Smart Speaker lacks. The tradeoff: Sounds a bit hollow, a bit boosted in the treble.
Buy the Sony ULT Field 3. Both are rated the same for sound quality, and it costs $89.77 less than the Bose Portable Smart Speaker.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Bose Portable Smart Speaker | Sony ULT Field 3 | |
|---|---|---|
| Price | $297.77 | $208.00 |
| Ranked | #78 of 175 in Medium Size Portable Bluetooth Speakers | #74 of 175 in Medium Size Portable Bluetooth Speakers |
| TWS | No | Yes |
| Aux Input | No | No |
| Battery Life | 12 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| IP Rating | IPX4 | IP67 |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | Pointing up | No |
| Weight | 2.3 lbs (1.06 kg) | 2.6 lbs (1.2 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.2 | 5.2 |
| Dimensions | 7.6” x 4.7” x 4.1” (192 x 119 x 104 mm) (H x W x D) | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) |
| App | Yes (Bose Music) | Yes |
| Built-in Microphone | Yes (far-field mic array, mic mute button) | Yes |
| Bluetooth Codecs | SBC, AAC | SBC, AAC, LDAC |
| EQ | Yes (Bass/Treble) | Yes (App + ULT button) |
| Drivers | 1x high-excursion driver with 360-degree deflector + 3x passive radiators | 1x 20mm tweeter + 1x 86mm x 46mm woofer |
| Digital Aux Input | No | No |
| Wi-Fi | Yes | - |
| Voice Assistants | Amazon Alexa & Google Assistant | - |
| Party Mode | Yes (Bose Music multi-room, SimpleSync, AirPlay 2) | Yes (Party Connect up to 100 speakers) |
| Power Bank | No | Yes (USB-C, 5V/1.5A) |
| Strap | No | Yes (detachable shoulder strap) |
| Streaming Services | AirPlay 2, Chromecast built-in, Spotify Connect, Amazon Music, Pandora, SiriusXM, TuneIn | - |
| Amplifier Power | - | 27W |
Related Speaker Comparisons
How Sony ULT Field 3 compares with other leading options:
- Sony ULT Field 3 vs EarFun Uboom L
- Soundcore Motion 300 vs Sony ULT Field 3
- Soundcore Motion+ vs Sony ULT Field 3
- Soundcore Boost “upgraded” 2021 vs Sony ULT Field 3
- Sony ULT Field 3 vs Minirig 4
Prices on this page were last checked October 15, 2026 at 5:41 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 Portable Smart Speaker: $297.77 Amazon $297.77 Lowest Bose $399.00 eBay
Pros: Both Alexa and Google Assistant are built in, and RTINGS rates its microphones as excellent at hearing commands from far away or in a noisy room. It works as a Wi-Fi speaker at home (AirPlay 2, Chromecast built-in, Spotify Connect) and as a Bluetooth speaker away from Wi-Fi, weighs about 1 kg with a carry handle, and is IPX4 splash resistant. SoundGuys measured 13 hours 6 minutes of playback at 75 dB, beating Bose’s 12 hour claim, and found the bass impressive for its size, especially near a wall or corner. Its 360 degree design spreads sound evenly around a room.
Cons: RTINGS found the out of the box tuning boomy and says it doesn’t get very loud; the app’s bass and treble sliders help, and SoundGuys recommended cutting bass by 10 to 20 steps to balance it. Pushed to full volume, Tom’s Guide heard unbalanced sound and Pocket-lint found the bass struggling and turning incoherent. RTINGS measured only about 5 hours of battery in its own test. It is mono, has no aux input (the USB-C port only charges), uses Bluetooth 4.2, and the Bose Music app supports a limited list of streaming services. IPX4 covers splashes only, not submersion or dust.
Full Bose Portable Smart Speaker review and specifications →
| Released | Sep 2019 (7 years ago) |
|---|---|
| App | Yes (Bose Music) |
| Aux Input | No |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes (far-field mic array, mic mute button) |
| Digital Aux Input | No |
| Dimensions | 7.6” x 4.7” x 4.1” (192 x 119 x 104 mm) (H x W x D) |
| Drivers | 1x high-excursion driver with 360-degree deflector + 3x passive radiators |
| EQ | Yes (Bass/Treble) |
| IP Rating | IPX4 |
| Omnidirectional | Pointing up |
| Party Mode | Yes (Bose Music multi-room, SimpleSync, AirPlay 2) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | No |
| Streaming Services | AirPlay 2, Chromecast built-in, Spotify Connect, Amazon Music, Pandora, SiriusXM, TuneIn |
| TWS | No |
| Voice Assistants | Amazon Alexa & Google Assistant |
| Weight | 2.3 lbs (1.06 kg) |
| Wi-Fi | Yes |
- Links
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Sony ULT Field 3: $208.00 Amazon $208.00 Lowest Sony $209.99 eBay
Older models: the Sony XB33 (ranked lower, rated 3.4/5), the Sony SRS-XE300 (ranked lower, rated 2.8/5), the Sony SRS-XB31 (ranked lower, rated 2.8/5) and the Sony SRS-XB30 (ranked lower, rated 2.6/5). See every Sony XB and ULT generation.
Same family: the Sony ULT Field 1 (smaller model, ranked lower, rated 3.1/5), the Sony ULT Field 7 (smaller model, rated 3.2/5), the Sony ULT Tower 10 (smaller model, rated 3.9/5), the Sony ULT Field 5 (larger model, rated 3.5/5), the Sony ULT Tower 5 (larger model, rated 4.5/5), the Sony ULT Tower 7 (larger model, rated 4.7/5), the Sony ULT Tower 9 (larger model, rated 4.2/5) and the Sony ULT Tower Max (larger model, rated 4.8/5).
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 →
| Released | Apr 2025 (1 year ago) |
|---|---|
| Amplifier Power | 27W |
| App | Yes |
| Aux Input | No |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| 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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