Short answer: the Marshall Middleton II. It ranks #31 of 120 large speakers by sound quality, rated 4.1/5, at $279.99. The Treblab HD-Max ranks #104, rated 2.4/5, at $123.47, $156.52 cheaper, a saving that is not big enough to make up the sound-quality gap.
The Marshall Middleton II is the better-sounding, deeper-bass pick. A waterproof stereo speaker with very deep bass for its size, a long battery, a power bank and an app EQ. Its bass reaches about 38Hz before falling 10dB, against 60Hz for the Treblab HD-Max. It is rated for 30 hours of battery against 20 for the Treblab HD-Max. At 4 lbs (1.8 kg) it weighs noticeably less than the Treblab HD-Max at 5.1 lbs (2.3 kg). Watch for: Bass boosted which drowns out the midrange.
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 Middleton II. It is rated higher for sound quality, and the $156.52 you would save on the Treblab HD-Max does not close the gap.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
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 Middleton II | Treblab HD-Max | |
|---|---|---|
| Price | $279.99 | $123.47 |
| Ranked | #31 of 120 in Large Size Portable Bluetooth Speakers | #104 of 120 in Large Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 38Hz | ~60Hz |
| Battery Life | 30 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | Yes (5 band) | No |
| IP Rating | IP67 | IPX6 |
| Party Mode | Yes (Marshall Stack) | No |
| Power Bank | Yes (USB-C) | Yes (USB-A, 5V) |
| Power Input | USB-C | USB-C |
| Weight | 4 lbs (1.8 kg) | 5.1 lbs (2.3 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 9.1” x 3.9” x 4.3” (230 x 98 x 110 mm) | 12.2” x 5.3” x 5.6” (310 x 135 x 143 mm) |
| Drivers | 2x 75mm woofers, 2x 0.625” tweeters + 2x passive radiators | 2x 75mm woofers, 2x 30mm tweeters |
| Frequency Response | 50Hz - 20kHz (Manufacturer specified) | 30Hz - 16kHz (Manufacturer specified) |
| Amplifier Power | 80W | 60W |
| Digital Aux Input | No | No |
| Strap | Yes (detachable strap) | Yes (detachable shoulder strap) |
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