These are not really the same size class, and that is the honest framing here. The Marshall Stockwell II ranks #11 of 120 large speakers by sound quality at $229.99; the Xiaomi Sound Party ranks #20 of 179 medium speakers by sound quality at $135.84.
The Marshall Stockwell II is the deeper-bass pick. A light, strap equipped speaker with some of the most natural sound around, even off to the side, and a long battery. Its bass reaches about 44Hz before falling 10dB, against 54Hz for the Xiaomi Sound Party. It keeps a wired aux input, which the Xiaomi Sound Party lacks. The tradeoff: Not very loud, and the added DSP reverb may annoy purists.
The Xiaomi Sound Party is the louder, longer-running choice. A versatile outdoor speaker with warm, balanced sound, fully waterproof build, long battery life, a phone charging port and a handy retractable handle. Alan Ross Reviews measured it at 102dB at full volume, against 96dB for the Marshall Stockwell II. It is rated for 26 hours of battery against 20 for the Marshall Stockwell II. It is rated IP67 against IPX4 for the Marshall Stockwell II. Watch for: The sound evidence is mixed rather than universally glowing.
Buy the Marshall Stockwell II ($229.99) for a large speaker; the Xiaomi Sound Party ($135.84) suits a medium speaker instead.
Looking for alternatives? See the complete 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
| Marshall Stockwell II | Xiaomi Sound Party | |
|---|---|---|
| Price | $229.99 | $135.84 |
| Ranked | #11 of 120 in Large Size Portable Bluetooth Speakers | #20 of 179 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | No |
| Bass Extension (-10dB) | 44Hz | 54Hz |
| Battery Life | 20 hours (Manufacturer specified) | 26 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| IP Rating | IPX4 | IP67 |
| Bluetooth Latency | 50ms | - |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | 102dB (measured by Alan Ross Reviews) |
| Party Mode | No | Yes (Party Connect, up to 100 speakers) |
| Power Input | USB-C | USB-C (5V/3A, 9V/2A, 12V/2A) |
| Stereo | No | No |
| Omnidirectional | Yes | No |
| TWS | No | Yes |
| Weight | 3.1 lbs (1.4 kg) | 2.6 lbs (1200 g) |
| App | No | Yes |
| Built-in Microphone | Yes | Yes |
| EQ | No | Yes |
| Power Bank | No | Yes (USB-C, 5V/3A) |
| Bluetooth Version | 5.0 | 5.4 |
| Dimensions | 7.1” x 6.3” x 2.8” (180 x 161 x 70 mm) | 10” x 3.6” x 3.6” (255 x 92 x 92 mm) |
| Drivers | 3” woofer, 2x 2” fullrange tweeters | 2x 40mm woofers (35W total) + 2x 15mm tweeters |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | 60Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 20W | 50W |
| Digital Aux Input | No | No |
| Strap | Yes (built-in strap) | Yes (detachable strap) |
| Lights | - | Yes |
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