Short answer: the Sony ULT Field 5 on measured sound quality, the Doss Soundbox XL on price. The Sony ULT Field 5 ranks #49 of 93 large speakers, rated 3.5/5, at $348. The Doss Soundbox XL ranks #65, rated 3.1/5, at $75.99, $272.01 cheaper.
What the Sony ULT Field 5 offers: IP67 rated, dustproof and water resistant. Watch for: Bass not as deep as others in the category, and sound quality overall is just okay.
Buy the Sony ULT Field 5 if sound quality matters more than the price. Buy the Doss Soundbox XL if the price matters more than sound quality.
There is a real battery-life gap here: the Sony ULT Field 5 is rated for 25 hours, the Doss Soundbox XL only 10 hours.
Water resistance is not close: the Sony ULT Field 5 is rated at IP67 (brief submersion), well ahead of the Doss Soundbox XL at IPX4 (splashing).
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Sony ULT Field 5 | Doss Soundbox XL | |
|---|---|---|
| Price | $348.00 | $75.99 |
| Ranked | #49 of 93 in Large Size Portable Bluetooth Speakers | #65 of 93 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Battery Life | 25 hours (Manufacturer specified) | 10 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC |
| Bluetooth Version | 5.3 | 4.0 |
| Built-in Microphone | Yes | Yes |
| Dimensions | 12.6” x 5.7” x 4.9” (320 x 144 x 125 mm) | 11.8” x 2.6” x 5.2” (300 x 66 x 132 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm woofer | 1x 76mm subwoofer, 2x 50mm fullrange |
| EQ | Yes (App + ULT button) | No |
| IP Rating | IP67 | IPX4 |
| Party Mode | Yes (Party Connect up to 100 speakers) | No |
| Power Bank | Yes (USB-C) | No |
| Power Input | USB-C | AC Power brick |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 7.3 lbs (3.3 kg) | 1.2 lbs (557 g) |
| Amplifier Power | 27W | 32W |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | - |
| Bass Extension (-10dB) | - | 55Hz |
| Maximum SPL | - | 100dB (measured by Alan Ross Reviews) |
| MicroSD Playback | - | Yes |
| Frequency Response | - | 40Hz - 20kHz (Manufacturer specified) |
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Prices on this page were last checked October 2, 2026 at 10:18 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 5: $348.00 Amazon eBay
Older models: the Sony SRS-XB43 (ranked lower, rated 3.5/5) and the Sony SRS-XG300 (ranked lower, rated 3.1/5).
Pros: A tough 3.3kg portable with IP67 protection, LDAC/AAC support, aux input, a 10-band app EQ, Party Connect, USB-C power-bank output and a claimed 25-hour battery. Reviews find it energetic and dynamic with substantial bass, enough volume for a yard, and two ULT modes that let bass-focused listeners choose a deeper or punchier presentation.
Cons: It prioritizes bass and loudness over fidelity: reviews find the upper mids and highs subdued, with limited stereo separation and soundstage depth. Deep bass is less authoritative than the enclosure suggests, and the loud confirmation tone when pressing the ULT button is an unnecessary annoyance. Use the app EQ and audition it before buying for detail-focused music.
Full Sony ULT Field 5 review and specifications →
| Amplifier Power | 27W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | 25 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LDAC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 12.6” x 5.7” x 4.9” (320 x 144 x 125 mm) |
| Drivers | 2x 46mm tweeters + 1x 79mm x 107mm 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) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| Weight | 7.3 lbs (3.3 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Danny Pops: Don’t TOUCH that ULT Button! Sony ULT Field 5 Review More from DannyPops →
- Mark Ellis Reviews: Sony just changed summer sound 🤨 | Sony ULT Field 5 & 3 Review
- Dominik Reviews: Sony ULT Field 5 vs JBL Xtreme 4 - Outdoor Sound Test - Sony shines or not? More from Dominik Reviews →
- Joy & Oluv’Sone: Sony ULT Field 5 vs Anker SoundCore Boom 2 - listening test More from Oluv’Sone →
- Mateusz Cholewa: SONY ULT Field 5 vs BOGASING S8 PRO MAX More from Mateusz Cholewa →
- Head-to-Head Comparisons
Doss Soundbox XL: $75.99 Amazon eBay
Pros: 32W output power, 100dB max volume, 10-hour battery life, IPX4 splashproof, MicroSD card slot, dual woofer setup with subwoofer, built-in microphone, TWS pairing support. Measured bass extension of 55Hz (-10dB).
Cons: A little hollow sounding.
Full Doss Soundbox XL review and specifications →
| Amplifier Power | 32W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 55Hz |
| Battery Life | 10 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 11.8” x 2.6” x 5.2” (300 x 66 x 132 mm) |
| Drivers | 1x 76mm subwoofer, 2x 50mm fullrange |
| EQ | No |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX4 |
| Maximum SPL | 100dB (measured by Alan Ross Reviews) |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | AC Power brick |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.2 lbs (557 g) |
- Links
- Reviews, Comparisons and Sound Samples
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