These sit in different size classes, so this is not a straight ranking comparison. The Xiaomi Sound Party ranks #20 of 179 medium speakers by sound quality at $135.84; the Marshall Stockwell III ranks #84 of 120 large speakers by sound quality at $249.99.
The Xiaomi Sound Party is the tougher choice. A versatile outdoor speaker with warm, balanced sound, fully waterproof build, long battery life, a phone charging port and a handy retractable handle. It is rated IP67 against IP55 for the Marshall Stockwell III. Watch for: The sound evidence is mixed rather than universally glowing.
The Marshall Stockwell III is the longer-running option. A stylish, rugged speaker with a very long battery you can swap yourself, a detailed app EQ, and power bank charging. It is rated for 40 hours of battery against 26 for the Xiaomi Sound Party. It supports AAC Bluetooth, which the Xiaomi Sound Party lacks. It keeps a wired aux input, which the Xiaomi Sound Party lacks. Watch for: Highs are recessed by default and need the treble control maxed to compensate, still lacking detail even then.
Buy the Xiaomi Sound Party ($135.84) for a medium speaker; the Marshall Stockwell III ($249.99) suits 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| Xiaomi Sound Party | Marshall Stockwell III | |
|---|---|---|
| Price | $135.84 | $249.99 |
| Ranked | #20 of 179 in Medium Size Portable Bluetooth Speakers | #84 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) | 40+ hours (Manufacturer specified) |
| Built-in Microphone | Yes | - |
| EQ | Yes | Yes (parametric, via app) |
| IP Rating | IP67 | IP55 |
| Party Mode | Yes (Party Connect, up to 100 speakers) | - |
| Power Bank | Yes (USB-C, 5V/3A) | Yes |
| Stereo | No | Partially |
| Omnidirectional | No | Yes |
| TWS | Yes | No |
| Digital Aux Input | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LE Audio with LC3 |
| Bluetooth Version | 5.4 | 5.3 |
| Dimensions | 10” x 3.6” x 3.6” (255 x 92 x 92 mm) | 7.1” x 6.4” x 2.9” (180 x 162 x 74 mm) |
| Drivers | 2x 40mm woofers (35W total) + 2x 15mm tweeters | 1x 3” woofer, 2x 1.75” wide-band drivers |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | 54Hz - 20kHz (Manufacturer specified) |
| Maximum SPL | 102dB (measured by Alan Ross Reviews) | - |
| Weight | 2.6 lbs (1200 g) | 2.9 lbs (1.3 kg) |
| Amplifier Power | 50W | 44W |
| Power Input | USB-C (5V/3A, 9V/2A, 12V/2A) | USB-C |
| Lights | Yes | - |
| Strap | Yes (detachable strap) | Yes (detachable strap) |
Related Speaker Comparisons
More worthwhile head-to-heads for Xiaomi Sound Party: