Short answer: the Soundcore Motion 100. It ranks #39 of 136 medium speakers by sound quality at $47; the Marshall Emberton III ranks #99 and costs $165.04, so there is little reason to consider the other one.
What the Soundcore Motion 100 offers: Use Oluv’s EQ for the flattest response Watch for: Not very deep bass, slight distortion. Real-world battery falls well short of the 12-hour claim at higher volumes (closer to 4 hours at max). Charging takes about 5 hours; no charge-out for other devices.
What the Marshall Emberton III offers: 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. Watch for: 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.
Buy the Soundcore Motion 100. It ranks higher for sound quality than the Marshall Emberton III and costs less, which settles it without a real tradeoff to make.
There is a real battery-life gap here: the Marshall Emberton III is rated for 32 hours, the Soundcore Motion 100 only 12 hours.
Specifications Side By Side
| Soundcore Motion 100 | Marshall Emberton III | |
|---|---|---|
| Price | $47 | $165.04 |
| Ranked | #39 of 136 in Medium Size Portable Bluetooth Speakers | #99 of 136 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Bass Extension (-10dB) | 65Hz | 62Hz |
| Battery Life | 12 hours (Manufacturer specified) | 32 hours (Manufacturer specified) |
| EQ | Yes | Yes (3 presets via app) |
| IP Rating | IPX7 | IP67 |
| Power Bank | No | No |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | Yes |
| TWS | Yes | No |
| Bluetooth Codecs | AAC, LDAC, SBC | SBC |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 7.5" x 3.1" x 2.4" (190 x 80 x 60 mm) | 6.3" x 2.7" x 3" (160 x 68 x 76 mm) |
| Drivers | 2x full-range drivers + 2x passive radiators | 2x 2" full-range cone drivers + 2x 2" passive radiators |
| Frequency Response | 50Hz - 40kHz (Manufacturer specified) | - |
| Weight | 1.3 lbs / 575 g | 1.5 lbs / 673 g |
| Output Power | 20W | 20W |
| Built in Microphone | No | Yes |
| Digital Aux Input | No | No |
| Party Mode | - | Yes (Marshall Stack) |
Related Speaker Comparisons
Other pairings from the same speaker class worth checking:
- Bose SoundLink Color II vs Ultimate Ears Boom 4
- Soundcore 3/Soundcore Select 2 vs Marshall Emberton II
- JBL Charge 4 vs Tribit Stormbox Pro
- Soundcore Motion 100 vs Ultimate Ears Megaboom 3
- Soundcore 3/Soundcore Select 2 vs Marshall Emberton III
Prices on this page were last checked August 27, 2026 at 10:09 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
Soundcore Motion 100: $47 Amazon eBay
Pros: Use Oluv’s EQ for the flattest response
Cons: Not very deep bass, slight distortion. Real-world battery falls well short of the 12-hour claim at higher volumes (closer to 4 hours at max). Charging takes about 5 hours; no charge-out for other devices.
Full Soundcore Motion 100 review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 65Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | AAC, LDAC, SBC |
| Bluetooth Version | 5.3 |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 7.5" x 3.1" x 2.4" (190 x 80 x 60 mm) |
| Drivers | 2x full-range drivers + 2x passive radiators |
| EQ | Yes |
| Frequency Response | 50Hz - 40kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Output Power | 20W |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.3 lbs / 575 g |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Soundcore Motion 100 vs Tribit Stormbox Pro
- Soundcore Motion 100 vs Xiaomi Sound Outdoor
- Soundcore Motion 100 vs JBL Pulse 5
- Soundcore Motion 100 vs Soundcore Glow
- Soundcore Motion 100 vs JBL Charge Essential 2
- Soundcore Motion 100 vs Bose Soundlink Flex
- Soundcore Motion 100 vs W-King D320
- Soundcore Motion 100 vs Bose Soundlink Flex 2nd gen
- See all 73 comparisons
Marshall Emberton III: $165.04 Amazon eBay
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.
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 →
| App | Yes |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 62Hz |
| Battery Life | 32 hours (Manufacturer specified) |
| 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 |
| Output Power | 20W |
| Party Mode | Yes (Marshall Stack) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| 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 74 comparisons