Different classes, so treat this as a step-up-or-not question rather than a head-to-head. The Xiaomi Sound Party ranks #20 of 179 medium speakers by sound quality at $135.84; the Sony ULT Field 5 ranks #59 of 120 large speakers by sound quality at $348.
The Xiaomi Sound Party is the lighter option. A versatile outdoor speaker with warm, balanced sound, fully waterproof build, long battery life, a phone charging port and a handy retractable handle. At 2.6 lbs (1.2 kg) it weighs much less than the Sony ULT Field 5 at 7.3 lbs (3.3 kg). The catch: The sound evidence is mixed rather than universally glowing.
Why pick the Sony ULT Field 5: A tough, waterproof party speaker with loud, bass focused output, an aux input, a power bank and a long battery. It supports LDAC Bluetooth, which the Xiaomi Sound Party lacks. It keeps a wired aux input, which the Xiaomi Sound Party lacks. It plays in stereo from a single unit, unlike the Xiaomi Sound Party. The catch: It prioritizes bass and loudness over fidelity: reviews find the upper mids and highs subdued, with limited stereo separation and soundstage depth.
Buy the Xiaomi Sound Party at $135.84 if you want a medium speaker. Buy the Sony ULT Field 5 at $348 if you want a large speaker instead.
Want more options? Browse the full Portable Bluetooth rankings.
Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| Xiaomi Sound Party | Sony ULT Field 5 | |
|---|---|---|
| Price | $135.84 | $348.00 |
| Ranked | #20 of 179 in Medium Size Portable Bluetooth Speakers | #59 of 120 in Large Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 54Hz | - |
| Battery Life | 26 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | Yes | Yes (App + ULT button) |
| IP Rating | IP67 | IP67 |
| Party Mode | Yes (Party Connect, up to 100 speakers) | Yes (Party Connect up to 100 speakers) |
| Power Bank | Yes (USB-C, 5V/3A) | Yes (USB-C) |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Digital Aux Input | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LDAC |
| Bluetooth Version | 5.4 | 5.3 |
| Dimensions | 10” x 3.6” x 3.6” (255 x 92 x 92 mm) | 12.6” x 5.7” x 4.9” (320 x 144 x 125 mm) |
| Drivers | 2x 40mm woofers (35W total) + 2x 15mm tweeters | 2x 46mm tweeters + 1x 79mm x 107mm woofer |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | - |
| Maximum SPL | 102dB (measured by Alan Ross Reviews) | - |
| Weight | 2.6 lbs (1200 g) | 7.3 lbs (3.3 kg) |
| Amplifier Power | 50W | 27W |
| Power Input | USB-C (5V/3A, 9V/2A, 12V/2A) | USB-C |
| Lights | Yes | - |
| Strap | Yes (detachable strap) | Yes (detachable shoulder strap) |
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