Short answer: the Brane X for bass, the Marshall Stockwell II for a more natural tone. The Brane X has the absolute deepest bass in the category, though its upper bass is boosted around 120Hz and its treble rolled off, so it misses detail up top. The Stockwell II is possibly the most natural sounding Marshall speaker, but it is not stereo.
Buy the Brane X if sound quality matters more than the price. Buy the Marshall Stockwell II if the price matters more than sound quality.
There is a real gap in water resistance: the Brane X at IP57 (brief submersion) against the Marshall Stockwell II, which has IPX4 (splashing).
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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Specifications Side By Side
| Brane X | Marshall Stockwell II | |
|---|---|---|
| Price | $549.00 | $229.99 |
| Ranked | #4 of 120 in Large Size Portable Bluetooth Speakers | #11 of 120 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Aux Latency | 295ms default, 33ms with aux pass-through | - |
| Bass Extension (-10dB) | 31Hz | 44Hz |
| Battery Life | 12 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | aptX HD, aptX, AAC, SBC | SBC |
| IP Rating | IP57 | IPX4 |
| Bluetooth Latency | 100ms | 50ms |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) | 96dB (measured by Alan Ross Reviews) |
| Party Mode | Yes (Brane app, up to 8 speakers) | No |
| Power Input | AC Power brick | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | Yes |
| TWS | Yes | No |
| Weight | 7.7 lbs (3.5 kg) | 3.1 lbs (1.4 kg) |
| Wi-Fi | Yes | - |
| App | Yes (Brane app) | No |
| Built-in Microphone | Yes | Yes |
| Voice Assistants | Amazon Alexa | - |
| EQ | Yes (5 band) | No |
| Power Bank | No | No |
| Dimensions | 9.3” x 7” x 6.1” (236 x 178 x 155 mm) | 7.1” x 6.3” x 2.8” (180 x 161 x 70 mm) |
| Drivers | 2x 2.5” midrange, 2x 0.75” tweeters + 6.5”x9” subwoofer | 3” woofer, 2x 2” fullrange tweeters |
| Frequency Response | 30Hz - 20kHz (Manufacturer specified) | 60Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 200W | 20W |
| Digital Aux Input | No | No |
| Bluetooth Version | 5.1 | 5.0 |
| Strap | No | Yes (built-in strap) |
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