Short answer: the Marshall Stockwell III. It ranks #59 of 82 large speakers by sound quality, rated 3.0/5, at $249.99. The Doss Extreme Boom ranks #80, rated 2.1/5, at $79.99, $170 cheaper, which does not close the gap in sound quality.
What the Marshall Stockwell III does well: 40+ hour battery life with a user-replaceable battery, strap, sleeve and grilles. Watch for: Highs are recessed by default and need the treble control maxed to compensate, still lacking detail even then.
What the Doss Extreme Boom does well: A durable 2.52kg outdoor speaker with claimed 60W output, IPX7 protection, USB-C charging, aux and microSD playback, speakerphone capability, a power bank and TWS pairing. The tradeoff: The measured 65Hz -10dB bass point means it lacks true low bass despite its boomy voicing.
Buy the Marshall Stockwell III. It is rated higher for sound quality, and the $170 saving on the Doss Extreme Boom is not enough to make up the difference.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Marshall Stockwell III | Doss Extreme Boom | |
|---|---|---|
| Price | $249.99 | $79.99 |
| Ranked | #59 of 82 in Large Size Portable Bluetooth Speakers | #80 of 82 in Large Size Portable Bluetooth Speakers |
| Drivers | 1x 3” woofer, 2x 1.75” wide-band drivers | 60W: Dual drivers + passive radiator |
| Frequency Response | 54Hz - 20kHz (Manufacturer specified) | - |
| Amplifier Power | 44W | 60W |
| Battery Life | 40+ hours (Manufacturer specified) | 30 hours (Manufacturer specified) |
| Bluetooth Version | 5.3 | 5.3 |
| Bluetooth Codecs | SBC, AAC, LE Audio with LC3 | SBC |
| IP Rating | IP55 | IPX7 |
| Weight | 2.9 lbs (1.3 kg) | 5.6 lbs (2.52 kg) |
| Dimensions | 7.1” x 6.4” x 2.9” (180 x 162 x 74 mm) | 12.7” x 4.7” x 7.2” (323 x 120 x 184 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) |
| 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) | - | 65Hz |
| MicroSD Playback | - | Yes |
| Built-in Microphone | - | Yes |
| Party Mode | - | No |
Related Speaker Comparisons
How Marshall Stockwell III compares with other leading options:
- Marshall Stockwell III vs Vifa Helsinki
- Marshall Stockwell III vs JBL Xtreme 5
- Marshall Stockwell III vs Tribit Stormbox Lava
- Marshall Stockwell III vs Brane X
- Marshall Stockwell III vs Minirig 4 with subwoofer
Prices on this page were last checked September 26, 2026 at 11:14 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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The Two Speakers In Full
Marshall Stockwell III: $249.99 Marshall eBay
Older model: the Marshall Stockwell II (rated 4.5/5).
Pros: 40+ hour battery life with a user-replaceable battery, strap, sleeve and grilles. Doubles as a USB-C power bank. IP55 dust/water resistance. App includes parametric EQ, a Soundstage widening control, and wall/corner placement compensation. Endless-rotation control knobs.
Cons: Highs are recessed by default and need the treble control maxed to compensate, still lacking detail even then. Bass tends to sound resonant and boomy, with reported frequency cancellation and phase issues on complex material that EQ doesn’t fully resolve. Oluv’s A/B testing against the outgoing Stockwell II finds the default tuning muffled and muddy enough to prefer the seven-year-old original out of the box, and output loses dynamics and bass while turning harsh well below maximum volume. No aptX support.
Full Marshall Stockwell III review and specifications →
| Amplifier Power | 44W |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | 40+ hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC, LE Audio with LC3 |
| Bluetooth Version | 5.3 |
| Digital Aux Input | No |
| Dimensions | 7.1” x 6.4” x 2.9” (180 x 162 x 74 mm) |
| Drivers | 1x 3” woofer, 2x 1.75” wide-band drivers |
| EQ | Yes (parametric, via app) |
| Frequency Response | 54Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP55 |
| Omnidirectional | Yes |
| Power Bank | Yes |
| Power Input | USB-C |
| Stereo | Partially |
| Strap | Yes (detachable strap) |
| TWS | No |
| Weight | 2.9 lbs (1.3 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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Doss Extreme Boom: $79.99 Amazon eBay
Pros: A durable 2.52kg outdoor speaker with claimed 60W output, IPX7 protection, USB-C charging, aux and microSD playback, speakerphone capability, a power bank and TWS pairing. It offers long claimed battery life and can play loudly enough for a casual party, with a bass-heavy sound that carries outdoors. Measured bass extension of 65Hz (-10dB).
Cons: The measured 65Hz -10dB bass point means it lacks true low bass despite its boomy voicing. Reviews describe fuzzy mids, mushy bass when pushed and rolled-off treble, while there is no app or EQ to restore balance. It is best for loud background music, not clear or refined listening.
Full Doss Extreme Boom review and specifications →
| Amplifier Power | 60W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 65Hz |
| Battery Life | 30 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 12.7” x 4.7” x 7.2” (323 x 120 x 184 mm) |
| Drivers | 60W: Dual drivers + passive radiator |
| EQ | No |
| IP Rating | IPX7 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| Weight | 5.6 lbs (2.52 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
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