Short answer: the Tronsmart Bang 2. It ranks #56 of 126 large speakers by sound quality, rated 3.6/5, at $109.99; the Marshall Stockwell III ranks #89, rated 3.0/5, and costs $249.99, which makes this an easy call rather than a real tradeoff.
The Tronsmart Bang 2 is the better-sounding option. A loud party speaker whose bass holds up at high volume, with water resistance, a long battery, app EQ and a shoulder strap. Watch for: Verdicts against the Soundcore Boom 2 and the Tribit Stormbox Lava were split: Dominik Reviews preferred the Soundcore Boom 2, and several listeners found the Bang 2’s mids muffled and its highs subdued without custom EQ.
The Marshall Stockwell III is the longer-running, lighter 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 26 for the Tronsmart Bang 2. At 2.9 lbs (1.3 kg) it weighs much less than the Tronsmart Bang 2 at 5.8 lbs (2.63 kg). It supports AAC Bluetooth, which the Tronsmart Bang 2 lacks. Watch for: Highs are recessed by default and need the treble control maxed to compensate, still lacking detail even then.
Buy the Tronsmart Bang 2. It is rated higher for sound quality than the Marshall Stockwell III and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Want more options? Browse the full Portable Bluetooth rankings.
Prices on this page were last checked November 14, 2026 at 6:17 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
| Tronsmart Bang 2 | Marshall Stockwell III | |
|---|---|---|
| Price | $109.99 | $249.99 |
| Ranked | #56 of 126 in Large Size Portable Bluetooth Speakers | #89 of 126 in Large Size Portable Bluetooth Speakers |
| Amplifier Power | 90W | 44W |
| App | Yes (Tronsmart) | Yes |
| Aux Input | Yes | Yes |
| Battery Life | 26 hours at 50% volume, lights off (Manufacturer specified) | 40+ hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LE Audio with LC3 |
| Bluetooth Version | 5.3 | 5.3 |
| Charging Time | 4.5 hours | - |
| Dimensions | 8.2”H x 15.3”W x 6.2”D (208 x 389 x 158 mm) | 7.1” x 6.4” x 2.9” (180 x 162 x 74 mm) |
| Drivers | 1x racetrack mid-woofer + 2x tweeters + 2x passive radiators | 1x 3” woofer, 2x 1.75” wide-band drivers |
| EQ | Yes (app) | Yes (parametric, via app) |
| Frequency Response | 53Hz - 20kHz (Manufacturer specified) | 54Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX6 | IP55 |
| Lights | Yes | - |
| Maximum SPL | 105dB (Manufacturer specified) | - |
| MicroSD Playback | Yes | - |
| Omnidirectional | No | Yes |
| Party Mode | Yes (multi-speaker pairing) | - |
| Power Bank | Yes (USB-C) | Yes |
| Power Input | USB-C | USB-C |
| Stereo | Partially | Partially |
| Strap | Yes (detachable shoulder strap) | Yes (detachable strap) |
| TWS | Yes | No |
| USB Playback | Yes | - |
| Weight | 5.8 lbs (2.63 kg) | 2.9 lbs (1.3 kg) |
| Digital Aux Input | - | No |
Where the Ratings Come From
- Tronsmart Bang 2: reviews by Dominik, Jagist and BT Sound Lab.
- Marshall Stockwell III: reviews by Joy & Oluv’Sone, Oluv and Alan Ross.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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