Short answer: the Marshall Stockwell III. It ranks #84 of 120 large speakers by sound quality, rated 3.0/5, at $249.99. The Treblab HD-Max ranks #104, rated 2.4/5, at $123.47, $126.52 cheaper, which does not close the gap in sound quality.
The Marshall Stockwell III is the better-sounding, longer-running choice. 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 20 for the Treblab HD-Max. At 2.9 lbs (1.3 kg) it weighs much less than the Treblab HD-Max at 5.1 lbs (2.3 kg). It supports AAC Bluetooth, which the Treblab HD-Max lacks. The catch: Highs are recessed by default and need the treble control maxed to compensate, still lacking detail even then.
The case for the Treblab HD-Max: A very loud, well built boombox with a long tested battery, water resistance, and power bank charging. The tradeoff: Boosted upper bass, not much lower bass.
Buy the Marshall Stockwell III. It is rated higher for sound quality, and the $126.52 you would save on the Treblab HD-Max does not close the gap.
Want more options? Browse the full Portable Bluetooth rankings.
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Specifications Side By Side
| Marshall Stockwell III | Treblab HD-Max | |
|---|---|---|
| Price | $249.99 | $123.47 |
| Ranked | #84 of 120 in Large Size Portable Bluetooth Speakers | #104 of 120 in Large Size Portable Bluetooth Speakers |
| Drivers | 1x 3” woofer, 2x 1.75” wide-band drivers | 2x 75mm woofers, 2x 30mm tweeters |
| Frequency Response | 54Hz - 20kHz (Manufacturer specified) | 30Hz - 16kHz (Manufacturer specified) |
| Amplifier Power | 44W | 60W |
| Battery Life | 40+ hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.3 |
| Bluetooth Codecs | SBC, AAC, LE Audio with LC3 | SBC |
| IP Rating | IP55 | IPX6 |
| Weight | 2.9 lbs (1.3 kg) | 5.1 lbs (2.3 kg) |
| Dimensions | 7.1” x 6.4” x 2.9” (180 x 162 x 74 mm) | 12.2” x 5.3” x 5.6” (310 x 135 x 143 mm) |
| App | Yes | No |
| EQ | Yes (parametric, via app) | No |
| Aux Input | Yes | Yes |
| Digital Aux Input | No | No |
| Power Bank | Yes | Yes (USB-A, 5V) |
| Power Input | USB-C | USB-C |
| Stereo | Partially | Yes |
| Omnidirectional | Yes | No |
| TWS | No | Yes |
| Strap | Yes (detachable strap) | Yes (detachable shoulder strap) |
| Bass Extension (-10dB) | - | ~60Hz |
| Built-in Microphone | - | Yes |
| Party Mode | - | No |
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