Short answer: the Sony ULT Field 3 if sound quality matters most, the Dayton Audio Boost if price matters most. The Sony ULT Field 3 ranks #64 of 150 medium speakers, rated 3.4/5, at $208. The Dayton Audio Boost ranks #129, rated 2.4/5, at $29.98, $178.02 cheaper.
Why pick the Sony ULT Field 3: IP67 rated, dustproof and water resistant. The tradeoff: Sounds a bit hollow, a bit boosted in the treble.
The case for the Dayton Audio Boost: Compact soda-can design, dual passive radiators, IPX5 waterproof, wireless stereo pairing capability, MicroSD card support. The tradeoff: Some midrange peaks, treble slightly rolled off.
Buy the Sony ULT Field 3 if sound quality matters more than the price. Buy the Dayton Audio Boost if the price matters more than sound quality.
If battery life is a priority, the Sony ULT Field 3 is rated for 24 hours versus 6 hours for the Dayton Audio Boost.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Sony ULT Field 3 | Dayton Audio Boost | |
|---|---|---|
| Price | $208.00 | $29.98 |
| Ranked | #64 of 150 in Medium Size Portable Bluetooth Speakers | #129 of 150 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Battery Life | 24 hours (Manufacturer specified) | 6 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.2 | 5.0 |
| Built-in Microphone | Yes | No |
| Dimensions | 10.1” x 4.4” x 3.1” (256 x 113 x 79 mm) | 3.5” x 3.5” x 4.3” (88.9 x 88.9 x 109.2 mm) |
| Drivers | 1x 20mm tweeter + 1x 86mm x 46mm woofer | 2x 1.5” full-range drivers + 2x passive radiators |
| EQ | Yes (App + ULT button) | No |
| IP Rating | IP67 | IPX7 |
| Party Mode | Yes (Party Connect up to 100 speakers) | - |
| Power Bank | Yes (USB-C, 5V/1.5A) | - |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 2.6 lbs (1.2 kg) | 0.9 lbs (426 g) |
| Amplifier Power | 27W | - |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | - |
| Bass Extension (-10dB) | - | 87Hz |
| MicroSD Playback | - | Yes |
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Prices on this page were last checked September 30, 2026 at 2:57 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 ULT Field 3: $208.00 Amazon eBay
Older models: the Sony XB33 (ranked lower, rated 3.4/5), the Sony SRS-XE300 (ranked lower, rated 2.8/5) and the Sony SRS-XB30 (ranked lower, 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 | 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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- Sony ULT Field 3 vs Soundcore 3/Soundcore Select 2
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Dayton Audio Boost: $29.98 Amazon eBay
Pros: Compact soda-can design, dual passive radiators, IPX5 waterproof, wireless stereo pairing capability, MicroSD card support. Measured bass extension of 87Hz (-10dB).
Cons: Some midrange peaks, treble slightly rolled off. Not much bass. Same hardware as the Boat Stone 350/352/358
Full Dayton Audio Boost review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 87Hz |
| Battery Life | 6 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.0 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 3.5” x 3.5” x 4.3” (88.9 x 88.9 x 109.2 mm) |
| Drivers | 2x 1.5” full-range drivers + 2x passive radiators |
| EQ | No |
| IP Rating | IPX7 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 0.9 lbs (426 g) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
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