Short answer: the Marshall Emberton III, though neither ranks well in its class. It ranks #110 of 150 medium speakers by sound quality (rated 2.7/5); the Boat Stone 350/352/358 ranks #130 (rated 2.3/5). Both are rated below 3.0/5 among the 150 medium speakers; for better sound, the Earfun Uboom L ranks #1 at $49.79.
The case for the Marshall Emberton III: 30 hour battery life: among the best in its class; a 20 min quick-charge gives 4 hours. The tradeoff: Strange unnatural echo-like sound coloration, bass not as deep as competitors.
Why pick the Boat Stone 350/352/358: Long battery life (12 hours), IPX5 water resistant, compact and portable, sturdy build, dual passive radiators. The catch: Some midrange peaks, treble slightly rolled off.
Buy the Marshall Emberton III. It is rated higher for sound quality than the Boat Stone 350/352/358.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Marshall Emberton III | Boat Stone 350/352/358 | |
|---|---|---|
| Price | $160.99 | $15 |
| Ranked | #110 of 150 in Medium Size Portable Bluetooth Speakers | #130 of 150 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Bass Extension (-10dB) | 62Hz | 87Hz |
| Battery Life | 32 hours (Manufacturer specified) | 6 hours (Manufacturer specified) |
| Party Mode | Yes (Marshall Stack) | - |
| Weight | 1.5 lbs (673 g) | 0.9 lbs (426 g) |
| IP Rating | IP67 | IPX7 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.0 |
| Dimensions | 6.3” x 2.7” x 3” (160 x 68 x 76 mm) | 3.5” x 7.1” (90 x 180 mm) |
| Drivers | 2x 2” full-range cone drivers + 2x 2” passive radiators | 2x 20mm tweeters + 2x 45mm drivers |
| TWS | No | Yes |
| EQ | Yes (3 presets via app) | Yes (multiple modes) |
| Built-in Microphone | Yes | Yes |
| Stereo | Yes | Yes |
| Omnidirectional | Yes | No |
| Power Input | USB-C | USB-C |
| Power Bank | No | - |
| Aux Input | No | Yes |
| Amplifier Power | 20W | 10W |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Digital Aux Input | No | No |
| Strap | No | - |
| MicroSD Playback | - | Yes |
Related Speaker Comparisons
How Marshall Emberton III compares with other leading options:
- Marshall Emberton III vs Earfun Uboom L
- Soundcore Motion 300 vs Marshall Emberton III
- Soundcore Motion+ vs Marshall Emberton III
- Soundcore Boost “upgraded” 2021 vs Marshall Emberton III
- Marshall Emberton III vs Minirig 4
Prices on this page were last checked September 30, 2026 at 2:57 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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Marshall Emberton III: $160.99 Amazon eBay
Older model: the Marshall Emberton II (ranked lower, rated 2.7/5).
Pros: 30 hour battery life: among the best in its class; a 20 min quick-charge gives 4 hours. IP67 rated, durable rubbery build using 50% recycled plastic. Measured bass extension of 62Hz (-10dB).
Cons: Strange unnatural echo-like sound coloration, bass not as deep as competitors. Not technically a 360 speaker, only front and rear. Not very loud. Not really any different from the Emberton II except having the treble turned down a little bit.
Full Marshall Emberton III review and specifications →
| Amplifier Power | 20W |
|---|---|
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 62Hz |
| Battery Life | 32 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 6.3” x 2.7” x 3” (160 x 68 x 76 mm) |
| Drivers | 2x 2” full-range cone drivers + 2x 2” passive radiators |
| EQ | Yes (3 presets via app) |
| IP Rating | IP67 |
| Omnidirectional | Yes |
| Party Mode | Yes (Marshall Stack) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | No |
| TWS | No |
| Weight | 1.5 lbs (673 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Marshall Emberton III vs Bose SoundLink Color II
- Marshall Emberton III vs Marshall Emberton II
- Marshall Emberton III vs Yamaha True X Speaker 1A
- Marshall Emberton III vs Teufel Rockster Go
- Marshall Emberton III vs Sony SRS-XB20
- Marshall Emberton III vs Sony SRS-XB30
- Marshall Emberton III vs Tribit Stormbox
- Marshall Emberton III vs Soundcore Flare 2
- See all 134 comparisons
Boat Stone 350/352/358: $15 Amazon eBay
Pros: Long battery life (12 hours), IPX5 water resistant, compact and portable, sturdy build, dual passive radiators. Measured bass extension of 87Hz (-10dB).
Cons: Some midrange peaks, treble slightly rolled off. Not much bass. Same hardware as the Dayton Audio Boost
Full Boat Stone 350/352/358 review and specifications →
| Amplifier Power | 10W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 87Hz |
| Battery Life | 6 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 3.5” x 7.1” (90 x 180 mm) |
| Drivers | 2x 20mm tweeters + 2x 45mm drivers |
| EQ | Yes (multiple modes) |
| IP Rating | IPX7 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 0.9 lbs (426 g) |
- 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.
- Head-to-Head Comparisons
- Boat Stone 350/352/358 vs Doss Soundbox Pro
- Boat Stone 350/352/358 vs Marshall Emberton II
- Boat Stone 350/352/358 vs Ultimate Ears Boom 4
- Boat Stone 350/352/358 vs Ultimate Ears Wonderboom 4
- Boat Stone 350/352/358 vs Soundcore 2
- Boat Stone 350/352/358 vs Sony ULT Field 1
- Boat Stone 350/352/358 vs JBL Grip
- Boat Stone 350/352/358 vs JBL Charge Essential
- See all 28 comparisons